Volume of a cylinder

Answer Key - Grade 7 Math Worksheet - Building Confidence

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

1. 1.

   Ari's can is a cylinder. One circle layer of it has an area of 78.5 square cm, and it is 11 cm tall. What is its volume in cubic cm?

   863.5
2. 2.

   Jun's drum is a cylinder. One circle layer of it has an area of 314 square cm, and it is 12 cm tall. What is its volume in cubic cm?

   3768
3. 3.

   Kira's candle is a cylinder. One circle layer of it has an area of 12.56 square cm, and it is 14 cm tall. What is its volume in cubic cm?

   175.84

4. Read this first

   Use this

   Grid, each square 1 cm by 1 cm. The end circle with its radius 6 cm; below it the wedges laid out as a rectangle 6 cm tall and 18.84 cm wide, which is one layer. The drum is 8 layers high, each layer 1 cm thick.

5. 4.

   Milo's drum has a radius of 6 cm and is 8 cm tall. Its end is a circle layer, and the layers stack 8 cm high. What is its volume in cubic cm?

   904.32
6. 5.

   Noah's mug has a radius of 4 cm and is 9 cm tall. Its end is a circle layer, and the layers stack 9 cm high. What is its volume in cubic cm?

   452.16
7. 6.

   Pia's candle has a radius of 2.5 cm and is 12 cm tall. Its end is a circle layer, and the layers stack 12 cm high. What is its volume in cubic cm?

   235.5
8. 7.

   Ren's jar has a radius of 5 cm and is 6 cm tall. Its end is a circle layer, and the layers stack 6 cm high. What is its volume in cubic cm?

   471
9. 8.

   Tala's candle is 8 cm across, so its radius is 4 cm. It is 15 cm tall. What is its volume in cubic cm? Use π = 3.14. Do not round.

   753.6
10. 9.

    Ari's mug is 7 cm across, so its radius is 3.5 cm. It is 10 cm tall. What is its volume in cubic cm? Use π = 3.14. Do not round.

    384.65
11. 10.

    Bo's drum is 24 cm across, so its radius is 12 cm. It is 10 cm tall. What is its volume in cubic cm? Use π = 3.14. Do not round.

    4521.6