Question

Issac is painting a wall that is 9 feet by 18 feet. So far, he has painted a part of the wall that is a 4 feet by 7 feet rectangle. What is the area of the part of the wall that Issac has to paint?

Answer 1

134 square feet

Explanation:

find the area of the whole wall: 9 x 18 = 162

find the area of the painted section: 4 x 7 = 28

subtract the area of painted space from the whole area: 162-28=134