The width of the rectangle is 15 cm, the area of which is 150 cm2. Find the perimeter of this rectangle.

From the condition, we know that the width of the rectangle is 15 cm, and its area is 150 cm2. In order to find the perimeter of this rectangle, let’s first find the length of the rectangle.

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

S = a * b;

15 * a = 150;

a = 150: 15;

a = 10 cm rectangle length.

We found the sides of the rectangle. Now let’s remember and apply the formula for finding the perimeter of a rectangle.

P = 2 (a + b);

Substitute and calculate:

P = 2 (10 + 15) = 2 * 25 = 50 cm perimeter of the rectangle.