Skills · Geometry · Geometry Basics

Circumference or area?

Printable practice with an answer key the engine computes, at three levels, in as many versions as you need.

Problem types

Sample Sheet · Level 1

  1. A pizza has a radius of 7 inches. How much crust runs around its edge?
  2. A round table has a radius of 19 inches. How much cloth covers its top?
  3. A round rug has a radius of 3 feet. How much fringe goes around its edge?
  4. A round pool has a radius of 6 feet. How big a cover does it need?
  5. A trampoline has a radius of 5 feet. How much padding goes around its edge?
  6. A round garden has a radius of 9 feet. How much fence goes around it?
  7. A round rug has a radius of 4 feet. How much floor does it cover?
  8. A wall clock has a radius of 8 inches. How much glass covers its face?

Answer key

  1. 43.96 inches
  2. 1,133.54 square inches
  3. 18.84 feet
  4. 113.04 square feet
  5. 31.4 feet
  6. 56.52 feet
  7. 50.24 square feet
  8. 200.96 square inches

Sample Sheet · Level 3

  1. A round table has a radius of 19 inches. How much cloth covers its top?
  2. A wall clock has a radius of 7 inches. How much ribbon goes around its rim?
  3. A round rug has a diameter of 6 feet. How much fringe goes around its edge?
  4. A round garden covers 113.04 square feet of ground. How wide is it?
  5. A pizza has a diameter of 18 inches. How much cheese covers its top?
  6. A round pool has a radius of 5 feet. How big a cover does it need?
  7. The padding around a trampoline is 25.12 feet long. How wide is it?
  8. A pizza has a radius of 8 inches. How much crust runs around its edge?

Answer key

  1. 1,133.54 square inches
  2. 43.96 inches
  3. 18.84 feet
  4. 12 feet
  5. 254.34 square inches
  6. 78.5 square feet
  7. 8 feet
  8. 50.24 inches

Make your own

Pick the count, the level and the version, and print it with work space and the key on its own page. The same skill also makes an I Do, We Do, You Do lesson, a Mosaic, a Decoder and more.

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