The perimeter of a rectangle is 24 cm, find its area if the length is 7 cm.

We know the perimeter of the rectangle and it is 24 cm.You need to find its area if the length is 7 cm.

Let’s remember the formula for finding the perimeter of a rectangle. It looks like this:

P = 2 (a + b);

Substituting the known values and solving the resulting equation, we find the width of the rectangle:

2 (7 + b) = 24;

7 + b = 12;

b = 12 – 7;

b = 5 cm width of the rectangle.

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.

S = 7 * 5 = 35 cm ^ 2 area of a rectangle.