The perimeter of the rectangle is 112 m. Find its sides, considering that one of them is 3 times larger than the other.

Let one side of the rectangle be x meters, then the second side of the rectangle is 3 meters. The perimeter of a rectangle is the sum of the lengths of its four sides, equal to 2 (x + 3x) meters or 112 meters. Let’s make an equation and solve it.

2 (x + 3x) = 112;

2 * 4x = 112;

8x = 112;

x = 112: 8;

x = 14 (m) – one side;

3x = 14 * 3 = 42 (m) – the second side.

Answer. 14 m; 42 m.