## Work Time

# Revise and Extend Your Work

Work with your partner to revise your work on the Self Check problem based on the previous questions and feedback from your partner.

**Self Check Problem**

Use the drawings to answer the following questions. Note that the surface areas of the top and bottom surfaces will not be the same because the prism has been sliced. For the same reason, the surface areas of the side surfaces will be different.

- What is the length and width of the rectangle cross section revealed?
- What is the surface area of the figure? Show how you found your answer.
- What is the volume of the figure? Show how you found your answer.

# Challenge Problem

Create a 2-D view of a 3-D figure on paper, and give it to your partner to create the 3-D figure in the 3-D builder. (Have your partner ignore the figure shown at the bottom-right).

INTERACTIVE: 3-D Builder