Question

The length of a square garden is twice a number. If the perimeter of the garden is 36, find the number.

Answer 1

x = 4.5

Explanation:

l = 2x

p = 4l

note: 4l in this case because it is a square

plug in l into equation p

36 = 4(2x)

36 = 8x

divide by 8

x = 4.5