The perimeter of the rectangle is 60 cm find its sides if one of the sides is 10 cm larger.

In order to find the lengths of the sides of a rectangle, we use the formula for finding the perimeter to compose and solve the equation.

The condition says that the perimeter of the rectangle is 60 cm. It is also known that one of the sides is 10 cm larger than the other.

We denote by the variable x cm the length of one of the sides, then the other side can be written as (x + 10) cm.

P = 2 (a + b);

2 (x + (x + 10)) = 60;

x + x + 10 = 60: 2;

2x + 10 = 30;

2x = 30 – 10;

2x = 20;

x = 20: 2;

x = 10 cm length of one side and 10 + 10 = 20 cm length of the second side.