The area of a rectangle, one side of which is 8 cm, is equal to 72 cm2. Find the perimeter of the rectangle?

We know the area of the rectangle and it is 72 cm ^ 2, and the length of one of the sides is also known and it is 8 cm.

Let’s remember the formula for finding the area of a rectangle.

S = a * b, where a and b are the length and width of the rectangle, respectively.

Substitute the known values and solve the resulting equation.

8 * a = 72;

We are looking for a variable as an unknown factor:

a = 72: 8;

a = 9 cm length of the second side of the rectangle.

We are looking for the perimeter of the rectangle using the formula P = 2 (a + b) = 2 * (8 + 9) = 2 * 17 = 34 cm perimeter of the rectangle.