![]() We can add the length and width together and then double this result because there are two of them.Īdding the length and the width, we have 2 + 3 = 5 cm. There are two lengths and two widths on a rectangle. This is because there are two widths, which are marked below. To find the perimeter of a rectangle, simply add the length and the width together and then multiply this result by 2. There is a quicker method for working out the perimeter of a rectangle when given the length and the width. This means that the total distance around the outside of the shape is 10 cm. Therefore the perimeter of this rectangle is 10 cm. Once the lengths of all of the sides of a shape are labelled, the perimeter can be found by adding these lengths together. If the top side of the rectangle is 3 cm, then so is the bottom side. Therefore if the left side of the rectangle is 2 cm, then so is the right side. The opposite sides of a rectangle are the same length. We are told the length and the width of this rectangle. Here is an example of finding the perimeter of a rectangle when only given 2 of its sides. Here are some of the most common units that perimeter is measured in. ![]() It is found by adding up all of the outside lengths of a shape. Perimeter is the total distance around the outside of a shape. Alternatively, add the length and width of the rectangle together and then double this result. It tackles different subject areas such as arithmetic, algebra, geometry, probabilities, statistics, integrals and much more.To find the perimeter of a rectangle add up the lengths of all four sides. Our math tutoring service includes academic support, homework help as well as catch up and exam preparation. If you ever find yourself struggling with your math lessons and homework, Tutorax’s tutoring solutions are here to help you. Mathematics can be a really challenging subject for a lot of students, whether they are in primary school, elementary or even high school. If we suppose a rectangle has length as a and width as b. To find the area of a rectangle, you need to multiply the length by the width of the rectangle. It is the amount of the two-dimensional space a shape occupies.įor instance, the area of a rectangle is the amount of surface enclosed by the sides of the rectangle. The area is a two-dimensional concept that gets measured by square meters ². The perimeter is the distance around a two-dimensional shape whereas the area is the measurement of the space inside the shape. The perimeter for this field is P = 2x(20+13) = 66 m What is the difference between area and perimeter? Therefore, the perimeter of this rectangle is P = 2x(12+5)= 34 cmĪ rectangular field is 20 m long and 13 m wide. We know that the perimeter of a rectangle is P = 2x(sum of adjacent sides) One side of a rectangle is 12 cm and the other one is 5 cm. The perimeter of this rectangle is P = 7+7+3+3 = 2x(7+3)= 20 cm The length and width of the rectangle are 7 cm and 3 cm, respectively. Here are some examples of how to calculate the perimeter of a rectangle: How do you calculate the perimeter of a rectangle? ![]() ![]() Hence, the formula for the perimeter of a rectangle is 2 x (sum of adjacent sides). Since the parallel sides of a rectangle are always equal, you only need to find the length of two sides in order to find the perimeter of the rectangle. To calculate the perimeter, you simply have to add up the side lengths of the rectangle. Meaning that you have to add the lengths of its sides to find its perimeter. The perimeter of a rectangle is the total length of its figure, known as the sum of the length of all the sides of the rectangle. All of its angles are right angles (90°) and its opposite parallel sides are always of equal length. It’s a shape that you will come across a lot so it’s important you know how to calculate its perimeter and area.Ī rectangle is a four-sided polygon. In mathematics, you will come across many different shapes and sizes like squares, circles, polygons…and you will be asked to calculate their perimeter or even their volume. ![]()
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