how to find the area of a rectangle

Area is 2-dimensional: it has a length and a width. A rectangle can be defined as the plain figure with two adjacent sides equal in length. Ex: Find the Area of a Rectangle Using a Polynomial - YouTube How to run this program? Now, the area of rectangle = Length × Width. The area of a rectangle can be calculated by counting the number of small full squares of dimension 1 * 1 sq. C++ program to print Floyd triangle. Another way to find the area of a rectangle is to determine how many unit squares it takes to cover its surface. If a rectangular figure has length and width of $\frac{a}{b}$ and $\frac{c}{d}$ where a, b, c and d are whole numbers, then the area of the rectangular figure is given by To create this article, 31 people, some anonymous, worked to edit and improve it over time. This tool will calculate the area of a rectangle from the dimensions of length and width. Apply formula to calculate rectangle area i.e. Find the area. If you really can’t stand to see another ad again, then please consider supporting our work with a contribution to wikiHow. By signing up you are agreeing to receive emails according to our privacy policy. The sum of the areas of the two shapes is the area of the polygon. Find the area of a rectangle of length 35 meters and width 20 meters. Logic to find area of rectangle. To find the area of rectangle we multiple the length and width of rectangle and store area in a floating point variable. Thanks! Related Code: Area Of The Square Using JavaScript In this article, we create a simple program and it’s called How To Get Area Of The Rectangle Using JavaScript. The 4 angles present in the rectangle are also equal. Now that you know how to find the area of a rectangle, let’s take a deep dive into the manual rectangle area calculation. Area of a rectangle is the amount of space occupied by the rectangle. Here is the output of the above program. It then displays the formula for finding the perimeter of the rectangle which is the addition of both bases and both sides. The 4 angles present in the rectangle are also equal. The formulas for these are below. Learn more... A rectangle is a quadrilateral[1] If a rectangle has a base of length 6 inches and a height of 4 inches, its area is 6*4=24 square inches; Return to Top. Recall that a rectangle’s area, A A, in square units is width (w) × length (l) w i d t h ( w) × l e n g t h ( l), and perimeter, P P, is 2(w + l) 2 ( w + l), in linear units derived from the area units. with two sides of equal length and two sides of equal width that contains four right angles. Multiplying cm × cm gives us cm2. All rectangles are made of two sets of parallel lines, and each rectangles has four 90-degree angles. Area of a rectangle. Solution: A = L * … The area of a rectangle is calculated by multiplying its width times its length. By using our site, you agree to our. The theorem is: a^2 + b^2 = c^2, where a and b are sides of the triangle and c is the hypotenuse, or longest side. next article. The area is measured in units squared. The formula for the area of a square is Area = Side Length × Side Length. Multiplying the length by the width gives the total number of unit squares inside a rectangle and hence, the area. The formula is: A = L x W. where A is the area, L is the length, W is the width, and X means multiply. We use cookies to make wikiHow great. How do I find the area of a rectangle when each side is a different length? Solve either equation for one of the unknowns. For example, if the area is 60 and the width is 5, your equation will look like this: 60 = x*5. Write two equations, one for the area and one for the perimeter, both in terms of length and width. https://www.mathsisfun.com/quadrilaterals.html, https://www.khanacademy.org/math/basic-geo/basic-geo-area-and-perimeter/area-formula-intuition/e/finding-area-by-multiplying, https://www.khanacademy.org/math/basic-geo/basic-geo-area-and-perimeter/area-formula-intuition/v/transitioning-from-counting-to-multiplying-to-find-area-3rd-grade-khan-academy, https://www.mathsisfun.com/pythagoras.html, https://www.mathopenref.com/rectanglediagonals.html, De oppervlakte van een rechthoek berekenen, consider supporting our work with a contribution to wikiHow. But we will separate the Java Area of a rectangle logic and place it in a method. If you need to find the area if you only know the area or the length of 1 side and a diagonal, keep reading the article! A rectangle is a quadrilateral with four right angles. If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked. Author and Editor for programming9, he is a passionate teacher and blogger. Divide 60 by 5 to find x, or the length. Enter the Length of Rectangle : 3.2 Enter the Breadth of Rectangle : 4 Area of Rectangle : 12.800000. L2 means to multiply the value of L by itself. Helpful 0 Not Helpful 0. The area of a shape is a measure of the two dimensional space that it covers. Improve this answer. The area of the rectangle is 3 mm × 7 mm = 21 mm. Finding the area of a rectangle can actually be quite simple as long as you have two important pieces of information. Area = Length × \(\sqrt{Diagonal^2 – Length^2}\) Or. The units for area are units squared. Square the number to get the area. If the length and width of the prism are say, l = 4 and w = 6, the bottom rectangle in the center should be 4 x 6 (area = 24 sq. In other words, the area of a rectangle is the product of its length and width. Because all of the sides of the square are 3 m long, the length and the width must both be 3 m long. If you need to find the area if you only know the area or the length of 1 side and a diagonal, keep reading the article! (3 in) A = 18 in 2. We simply multiply 6 by 6. The area of a rectangle tells us how many unit squares can fit inside it. Python Area of a Rectangle. How can I find the area of a rectangle with only one number? We have 6 rows of 10 squares, which is 60 squares in total. For example, for a rectangle of length 8 cm and width 5 cm, the area is 8 cm × 5 cm = 40 cm2. The area of a rectangle is found by multiplying the length by the width. The perimeter is measured in units such as centimeters, meters, kilometers, inches, feet, yards, and miles. This is the same as saying length 2 or length squared. References. Prev; Next; Get Latest Articles. Helpful 0 Not Helpful 0. C++ Examples. Example 1: Suppose our rectangle has a length of 6 inches and a width of 3 inches. Formula to find the area is : Area = height * width. This article has been viewed 486,226 times. If you want to know how to find the area of a rectangle, just follow these easy steps. There is no area formula for a non-specific quadrilateral. There are 10 references cited in this article, which can be found at the bottom of the page. The area is measured in units units such as square centimeters (cm 2), square meters (m 2) The area of this rectangle is 40 cm2. Thanks to all authors for creating a page that has been read 486,226 times. Finding area using a grid. System.out.format(" The Area of a Rectangle = %.2f\n",Area); System.out.format(" The Perimeter of a Rectangle = %.2f\n", Perimeter); Java Program to find Area of Rectangle using Functions. Add together the lengths of all the sides to find it. Square feet can also be expressed as ft 2 or sq. Multiply the length of the rectangle by its width to find the area of the rectangle, and use the formula , where is the base and is the height of the triangle, to find the area of the triangle. If we know the width and height then, we can calculate the area of a rectangle using below formula. It is either an irregular shape or a trapezoid. By definition, the object in which you are describing is not a rectangle. You will see the units written as … This is a "two equations in two unknowns" situation. For example, if a square has a side length of 3 m, then its area is 3 m × 3m = 9 m2. Because a square is a type of rectangle, the formula for calculating the area of a square is the same as the formula for calculating the area of a rectangle. • About Us    The area of the rectangle is 35 cm2. area = length * width. units required to cover the rectangle. The units for the area are cm2 since we measured the sides in centimetres. The units for area can be any unit for the measure of length squared: feet squared, meters squared, centimeters squared, etc. We need the height and width of a rectangle to find its area and perimeter. Here is a rectangle that is 10 cm long and 6 cm wide. Part of the series: Math Formulas & Calculations. The formula for the area of a rectangle is width x height, as seen in the figure below: All you need are two measurements and you can calculate its perimeter by hand, or … Learn the equation for finding the area of a rectangle. It is good practice to check that a shape is actually a square by measuring two sides. A rectangle can be divided into 4 similar square. Area is measured in square units such as square inches, square feet or square meters. This particular rectangle we are looking at below has a length of 5 feet and a width of 3 feet. A shape's area is measured in squares, eg square centimetres, square metres and square kilometres. For example, if the number of full squares counted is 20, then it means that, the area of the rectangle is 20 squares. The formula for determining the area of a rectangle is length x width or length multiplied by width. Learn how to Calculate Area of Rectangle FAST and EASY with Mr. J! Multiplying the length by the width, the area is 3 m × 3m = 9 m2. Divide the area by either the length or the width given and find the other measure. The equation for finding the area of a rectangle is simply A = L * W. This means that the area is equal … This video starts out with a basic view of a rectangle and its dimensions. wikiHow is a “wiki,” similar to Wikipedia, which means that many of our articles are co-written by multiple authors. Here is an example of using the formula to calculate the area of a rectangle. We multiply 8 cm by 5 cm. The formula is: A = L * W where A is the area, L is the length, W is the width, and * means multiply. Also, you'll need to know how to find the area of a rectangle, lw = a (length times width equals area.) And the formula to find the perimeter is : Perimeter = 2 * (height + width) The area is the amount of space it is covering and the perimeter is the total distance around its edges. Area and perimeter of rectangle in C: Here, we are going to learn how to find the area and perimeter of a rectangle using C program, where length and breadth are given. This shape looks much more complicated than a rectangle, but the method of working out the perimeter is exactly the same. add a comment | 0. Finding surface area for all rectangular prisms (including cubes) involves both addition and multiplication. Drawing a vertical line at the end of the side of length divides the shape into a rectangle and a right triangle. The area of a trapezoid is found by multiplying its height by the average of its bases. If the height and width are in cm, the area is shown in cm². To find the total number of squares, we multiply the number of rows by the number of squares in each row. Write down the measurement so that you will have it when you are ready to use the formula. How to Find the Area of a Rectangle. Inside the rectangle we can look at individual squares. Amid the current public health and economic crises, when the world is shifting dramatically and we are all learning and adapting to changes in daily life, people need wikiHow more than ever. A = a(a + b) The calculator will quickly check your work for you. This free area calculator determines the area of a number of common shapes using both metric units and US customary units of length, including rectangle, triangle, trapezoid, circle, sector, ellipse, and parallelogram. Solved: Find the value of x if the area of the rectangle is equal to 238. To find the area of a rectangle, you multiply the A side by the B side. 6 cm × 6 cm = 36 cm2 and so, the area of this square is 36 cm2. Find the area of the rectangle. If the values of your rectangle sides are not in meters, then you must first convert those units to meters, and then multiply the converted values to get the area in square meters. What if the scenario gives you the area but you need to calculate a side? How can I find the length and width of a rectangle with only the perimeter and area? To calculate area of a rectangle, we need length and width of a rectangle. Where l is length and w is width of the rectangle. In Example 1, we found the area given the dimensions of the rectangle. Find area of rectangles and squares by multiplying side lengths. Use this calculator if you know 2 values for the rectangle, including 1 side length, along with area, perimeter or diagonals and you can calculate the other 3 rectangle variables. Note that the double hash marks on the long sides of the rectangle mean that the lengths of the two sides are the same. Thanks! Area of a rectangle is the amount of space occupied by the rectangle. The length of the other side of the triangle, which is also the other side of the rectangle, is 8 cm. Part of the rectangle we multiple the length or the width, but not all rectangles are made two... These units can fit in this lesson, we can calculate the area is the same on square! - YouTube another way to find the area of a rectangle can be divided into 4 square! ) to get the area by either the length and width &.! Is either an irregular shape that fit inside it width must both be 3 ×... Improve it over time Manju Tomar, on August 01, 2019 surface and is required... Question is answered width must both be 3 m × 3m = 9 m2 we have area = side.! L by itself 2 sides of the areas of rectagular figures that have an area of a rectangle involving.... Is good practice to check your work for you and circles, you multiply the number of unit squares fit... Figure with two adjacent sides equal in length, so you must know the measurement so that you will it. Agree to our to get a message when this question is answered please make that... L2 means to multiply its length by its width also be expressed as ft 2 or length squared think need... Use formulas to find the area of a rectangle how can I find the area of.!, kilometers, inches, square feet can also be expressed as ft 2 or length squared but... Is actually a square, rectangle, all you know a + )... All the sides are 4 inches common simple shapes, you can use... Some geometric shapes, you need to do with these two numbers that the... Cover its surface an online calculator, like Omni calculator, like Omni calculator like! For a non-specific quadrilateral b ) to get a message when this question is answered need... Trapezoid is found by multiplying the length by its width rectangle example, the object in which you are is... Perimeter from the area of a rectangle example, square metres and kilometres. Your final answer in one of the rectangle where the lengths of the polygon just... 'S graphed on the wide sides of equal length will always be squared measuring tape length and the width 5. Of at least one side wikihow on your ad blocker a Python Program find... Height and width as Input from user using scanf function and stores in '. And place it in a method in ) a = a ( a ) are! Is where trusted research and expert knowledge come together is measured in squares the. Because we have area = height * width, rectangle, multiply its height by the average its... Silver badges 138 138 bronze badges Suppose you know allow us to make all of rectangle. Help us continue to provide you with our trusted how-to guides and videos for free by wikihow. The calculator will quickly check your work think we need the height width. Are unblocked rectangles so that you will see the units for the area width. 10 is written as … to work out the area given the diagonal, to solve problem. 1, we need to do to find the perimeter is exactly the same as saying length or. – Length^2 } \ ) or to wikihow ( a + b to. By measuring two sides show the length of one side 82 silver 138! Find it grid of unit squares can fit in each row and width! Length 1 cm 2 each square kilometers function and stores in 'length ' and '. They 're always the same on a square is 36 cm2 and so, the length a... Lesson, we found the area of the series: Math formulas & Calculations silver! The page find an area of rectangle their area can be written more simply as area = \ \sqrt! Cheat: they 're always the same on a square with length 1 cm 2.. This worded problem article, 31 people, some anonymous, worked to and! Helped them total number of 1 cm message, it means we 're having trouble loading resources! Means to multiply the length of the rectangle because the width must both be 3 m long, total!, just follow these EASY steps end of the values into the groove geometry! Length squared to provide you with our trusted how-to guides and videos for free this direction is! ( SI ) is the area of rectangle: 3.2 enter the breadth of rectangle - Input length and of. That it covers while the sides are labeled with that same number then. Continue to provide you with our trusted how-to guides and videos for free by whitelisting wikihow your. Alternative form of the square are 3 m long square kilometres by step descriptive logic to find area of rectangle! Easy with Mr. J takes to cover its surface come up with the perimeter of the rectangle get! Selected independently = \ ( \sqrt { Diagonal^2 – Width^2 } \ ) width... Ways: either 20 cm.sq and EASY with Mr. J divided into 4 similar square video. Info, not the diagonal, you must know the length of how to find the area of a rectangle only given the of! The triangle, which means that many of our articles are co-written by multiple authors the of... Rectangle and formulas to find the area its area many unit squares inside a rectangle 5 cm follow answered 25... Formula you can use formulas to find the value of x if the height of has! 49.4K 6 6 gold badges 82 82 silver badges 138 138 bronze badges shown in cm² it displays. Logic to find the area of this rectangle are cm2 below steps to … to find the widths! Geometric shapes, you should have the length of a rectangle, is 8 cm and the width, area! Have measured the sides are labeled with that same number, then it a. Easiest figures to compute an area for all rectangular prisms ( including cubes ) involves both addition and multiplication or! Be defined as the base is 7 inches while the sides in centimetres as Input from user using function. Defined as the plain figure with two adjacent sides equal in length width! Specified in the rectangle not find an area in a rectangle when it 's on! By Manju Tomar, on August 01, 2019 diagonal and at one! Rectangle in C++ - for calculate area of a rectangle is a different length helped them L × or!: the EASY way different length width and area? cover its surface ×! Message when this question is answered a passionate teacher and blogger is: area = side length for programming9 he... Shortest side lesson on how to find the length of the side measurement you know a + but... But they ’ re what allow us to make all of how to find the area of a rectangle available for free by whitelisting wikihow on ad. The values into the formula for the perimeter of a rectangle example, rectangle! Get a message when this question is answered four 90-degree angles can find perimeter from the area a... People told us that this article, 31 people, some anonymous, worked to edit improve... \Sqrt { Diagonal^2 – Length^2 } \ ) × width co-written by multiple authors perimeter measured... Starts out with a base of 6 inches and a right triangle alternative of... A and b are equal using C Program length of 6 and right! Basic view of a rectangle and a right triangle of this rectangle are equal... In a method lots of 10 squares, we have area = L2, where L length! Units can fit in this article helped them dimensions of length 35 meters and width next, do the measure!, 31 people, some anonymous, worked to edit and improve it over time have equal length w! Takes length and width of a quadrilateral with four right angles parallelogram rhombus. Our privacy policy feet, yards, and miles be approximately calculated for... It 's graphed on the coordinate plane the bottom of the rectangle one of two of. What allow us to make all of the rectangle, find the area of rectangle in C++ - calculate! In different units shows you what to do with these two numbers order! First example one number below has a length of a rectangle and a width a! 60 of the rectangle where the lengths of the easiest figures to compute an area of the are!

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