The length of the rectangle is 5 times its width. Find the sides of the rectangle if its perimeter is 1212 cm.

1. Let’s say that the width of the rectangle is x centimeters.

2. Since under the condition the length is five times the width, its value is x * 5 = 5x cm.

3. The perimeter of the rectangle is determined by the formula p = (a + b) * 2. You can make an equation with one unknown, find the value of this unknown, which is equal to the width.

1212 = (x + 5x) * 2 or 1212/2 = x + 5x;

606 = 6x;

x = 606/6 = 101 centimeters.

Answer: Width x = 101 centimeters, length x * 5 = 101 * 5 = 505 centimeters.