Molly is painting a model house and needs to know how much paint she will need. She knows the surface area of the prism is 216 square inches and the surface area of the pyramid is 84 square inches.
What is the area Molly needs to paint? Follow the steps to solve this problem.
1. Which surface is shared by the two solids? What are the dimensions of this surface? (2 points)
2. There is another surface that Molly does not need to paint, because it won’t show when she displays the model house. Describe that surface. (2 points)
3. To find the area Molly needs to paint, she should add the surface areas of both solids and subtract:
Circle the correct answer. (3 points)
4. Find the area Molly needs to paint. Show your work, and be sure to include units with your answer. (3 points)