Volume of prisms and pyramids

Answer Key - Grade 7 Math Worksheet - Building Confidence

Circle the best answer, or write your answer on the line.

1. 1.

   Jun's cheese wedge is a prism 5 cm long. Its end is half of a rectangle 8 cm by 6 cm. The mice have heard about it. What is its volume in cubic cm?

   120
2. 2.

   Pia's treasure box is a prism 2 in long. Its end is a trapezoid: parallel sides 4.5 and 1.5 in, height 4 in. It guards one shiny button. What is its volume in cubic inches?

   24
3. 3.

   Ren's toy cart basket is a prism 3 in long. Its end is a trapezoid: parallel sides 5 and 2 in, height 4 in. It rolls squeakily. What is its volume in cubic inches?

   42
4. 4.

   Tala's model recycling bin is a prism 3.5 in long. Its end is a trapezoid: parallel sides 6 and 3 in, height 4 in. It is tidy. What is its volume in cubic inches?

   63
5. 5.

   Bo's playhouse roof has a base of 16 square cm and is 9 cm tall. Three of these pyramids fill the matching prism. A chimney peeks out. What is its volume in cubic cm?

   48
6. 6.

   Esme's cheese wedge is a prism. Its end is half of a rectangle 9 cm by 12 cm, with slanted side 15 cm. Mice approve. What is its end's area (one layer) in square cm?

   54
7. 7.

   Kira's toy ramp is a prism. Its end is half of a rectangle 0.9 cm by 1.2 cm, with slanted side 1.5 cm. Wheels ready. What is its end's area (one layer) in square cm?

   0.54
8. 8.

   Luz's craft box is a prism. Its end is a trapezoid: parallel sides 8 and 5 in, height 4 in. Glitter everywhere. What is its end's area (one layer) in square inches?

   26
9. 9.

   Milo's treasure box is a prism. Its end is a trapezoid: parallel sides 4 and 1 in, height 4 in. Shiny inside. What is its end's area (one layer) in square inches?

   10
10. 10.

    Noah's model recycling bin is a prism. Its end is a trapezoid: parallel sides 7 and 4 in, height 4 in. It is tidy. What is its end's area (one layer) in square inches?

    22