The perimeter of the rectangle is 80 cm. Find the sides of the rectangle if one side is 4 cm larger than the other.

The perimeter of the rectangle is 80 centimeters, one side of the rectangle is 4 cm larger than the other. Since the lengths (among themselves) and widths (among themselves) in the rectangle are equal, the length will be 4 cm greater than the width;

We mark the width with the letter x, and the length x + 4, then we draw up an equation along which the perimeter of the rectangle is:

(x + x + 4) * 2 = 80;

4x + 8 = 80;

4x = 72;

x = 18;

Then 18 centimeters is the width, and the length will be equal to 18 + 4 = 22 centimeters

Answer: width – 18 centimeters; length – 22 centimeters.