Question

The perimeter of a rectangle is 30 cm. If the rectangle is four times as long as it is wide, what is the area of the rectangle?

Answer 1

area is length 12 x width 3 = 36 square cm

Explanation:

Always reread the question to make sure you're answering the right question and using the correct units.

length is 4w, width is w

perimeter is two lengths + two widths: 2(4w) + 2w = 30cm

solve for w: 10w = 30

width = 3, and length is 12