Volume of prisms and pyramids

Answer Key - Grade 7 Math Worksheet

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

1. 1.

   Jun's bread loaf is 10 in long, 4.5 in wide and 4 in tall. It smells amazing. What is its volume in cubic inches?

   180
2. 2.

   Kira's gift box is 12.5 cm long, 8 cm wide and 4.5 cm tall. Nobody is allowed to shake it. What is its volume in cubic cm?

   450
3. 3.

   Noah's toy ramp is a prism 6 cm long. Its end is a right triangle: base 15, height 8, slanted side 17 cm. It is built for speed. What is its volume in cubic cm?

   360
4. 4.

   Esme's toy castle roof has a base of 6 cm by 5 cm and a height of 9 cm. Flag up. What is its volume in cubic cm?

   90
5. 5.

   Pia's recycling bin is a prism 2.5 ft long. Its end is a trapezoid: parallel sides 3.6 and 2.4, height 1.6, slanted side 2 ft. It is full of cans. Which expression gives its volume?

   • 3.6 × 1.6 × 2.5
   • (3.6 + 2.4) × 2 ÷ 2 × 2.5
   • (3.6 + 2.4) × 1.6 × 2.5
   • (3.6 + 2.4) × 1.6 ÷ 2 × 2.5
6. 6.

   Ren's storage box holds 24 cubic inches. Ren makes its height 3 times as long. It is extra roomy now. What is its new volume in cubic inches?

   72
7. 7.

   Tala's gift box holds 18 cubic inches. Tala makes its length 2 times as long. Bigger boxes mean bigger bows. What is its new volume in cubic inches?

   36
8. 8.

   Zee's lunch box holds 30 cubic inches. Zee makes its width 4 times as long. Snacks will fit better. What is its new volume in cubic inches?

   120
9. 9.

   Ren's cheese block is a prism. Its end is a triangle: base 18, height 24, slanted side 30 cm. Lots of holes. What is its end's area (one layer) in square cm?

   216
10. 10.

    Bo's cart basket is a prism. Its end is a trapezoid: parallel sides 3.8 and 2.6, height 1.6, slanted side 2 ft. It squeaks. What is its end's area (one layer) in square feet?

    5.12