Question

The length of a rectangle is twice its width. The Perimeter is 42 cm. Find the length of each side.​

Answer 1

A) L = 2*W

B) 2L + 2W = 42

We'll put Equation A) into B)

2*2W + 2W = 42

4W + 2W = 42

6W = 42 cm

Width = 7 cm

Length = 14 cm

Explanation: