Surface area of a cylinder

Answer Key - Grade 7 Math Worksheet

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

1. 1.

   Esme's can has a radius of 4 cm and is 11 cm tall. What is its surface area in square cm, both ends and the side? Use π = 3.14. Do not round.

   376.8
2. 2.

   Jun's jar has a radius of 6 cm and is 15 cm tall. What is its surface area in square cm, both ends and the side? Use π = 3.14. Do not round.

   791.28
3. 3.

   Noah's jar is 8 cm across and 12 cm tall. What is its surface area in square cm, both ends and the side? Use π = 3.14. Do not round.

   401.92
4. 4.

   Pia's drum is 24 cm across and 10 cm tall. What is its surface area in square cm, both ends and the side? Use π = 3.14. Do not round.

   1657.92
5. 5.

   Ari's drum has a radius of 5 cm and is 8 cm tall. What is its surface area in terms of π? Write it like 14π.

   130π
6. 6.

   Esme's jar has a radius of 8 cm and is 10 cm tall. Which expression gives its surface area in square cm, both ends and the side? Use π = 3.14.

   • 3.14 × 8 × 8 + 2 × 3.14 × 8 × 10
   • 2 × 3.14 × 8 × 10
   • 3.14 × 8 × 8 × 10
   • 2 × 3.14 × 8 × 8 + 2 × 3.14 × 8 × 10
7. 7.

   Jun's candle has a radius of 4 cm and is 13 cm tall. Which expression gives its surface area in square cm, both ends and the side? Use π = 3.14.

   • 2 × 3.14 × 4 × 13
   • 3.14 × 4 × 4 + 2 × 3.14 × 4 × 13
   • 2 × 3.14 × 4 × 4 + 2 × 3.14 × 4 × 13
   • 3.14 × 4 × 4 × 13
8. 8.

   A label wraps once around the side of Kira's can, radius 3.5 cm and height 10 cm. What is the label's area in square cm? Use π = 3.14. Do not round.

   219.8
9. 9.

   A label wraps once around the side of Luz's jar, radius 4.5 cm and height 12 cm. What is the label's area in square cm? Use π = 3.14. Do not round.

   339.12
10. 10.

    A label wraps once around the side of Milo's drum, radius 10 cm and height 12 cm. What is the label's area in square cm? Use π = 3.14. Do not round.

    753.6