Use the following information to answer questions 20-22.
A contractor is building a garage onto the end of a house. The house consists of a triangular prism resting on top of a rectangular prism, as shown in the figure below, The roof of the house is formed by 2 congruent rectangles that are joined at the ridge. The house and the garage are geometrically similar, with each dimension of the garage
the corresponding dimension of the house. Some of the lengths of the house, in feet, are as follows:
The contractor will use shingles that cost ＄21 per bundle to cover the roof of the garage. Each 1-gallon can of paint used to paint the inside walls and ceiling of the garage covers exactly 400 square feet with 1 coat of paint.
22. The contractor will paint the ceiling and inside walls of the garage. The area to be painted, rounded to the nearest square foot, is 2,650 square feet. What is the minimum number of cans of paint that will be needed to paint this area with 2 coats of paint?
Your Answer is
Correct Answer is K
Explanation
Note that the question says that the entire area needs to be painted with two coats of paint, and that if each can of paint is opened, it is considered used regardless of whether it is used up or not. Therefore, K is calculated.