Question

The perimeter of a rectangle is 28.8 centimeters. The lenght of the rectangle is twice as long as its width. Find the length and width of the rectangle

Answer 1

The formula of a perimeter of rectangle: P = 2l + 2w.

We have:

P = 28.8 cm

l = 2w

Substitute:

2(2w) + 2w = 28.8

4w + 2w = 28.8

6w = 28.8    |:6

w = 4.8 cm

l = 2w = 2(4.8) = 9.6 cm

Answer: l = 9.6 cm and w = 4.8 cm.