Question

A barn is shaped like a rectangular prism with a triangular prism on top as shown. The exterior four walls and two triangular faces need to be repainted. If one gallon of paint covers 232 square feet, how many gallons will it take to repaint the barn? Enter your answer in the box.

PLS help me I'm DESPERATE
its 100 points so it will be worth it

Answer 1

• 23 gallons

Explanation:

The area of the 4 exterior walls:

• A = 2(38 + 84)*20 = 4880 ft²

The area of the 2 triangular faces:

• A = 2*1/2*38*12 = 456 ft²

Total area to be painted:

• 4880 + 456 = 5336 ft²

Paint required:

• 5336 / 232 = 23 gallons