Circumference and Area of Circles Quiz

Grade 7 · Math · Quiz

Ten questions on circumference, area, radius, diameter, and pi for 7th grade circles.

Questions

1. What is the circumference of a circle with diameter 12 ft? (Use π ≈ 3.14)

   1. 18.84 ft
   2. 37.68 ft
   3. 113.04 ft
   4. 452.16 ft
   Show answer

   Answer: 37.68 ft

2. A circle's diameter is twice its radius.

   Show answer

   Answer: True

3. The area formula for a circle is A = π × r___.

   Show answer

   Answer: ²

4. A circle has a radius of 9 cm. What is its area? (Use π ≈ 3.14)

   1. 28.26 cm²
   2. 56.52 cm²
   3. 254.34 cm²
   4. 254.34 m²
   Show answer

   Answer: 254.34 cm²

5. Pi is exactly equal to 3.14.

   Show answer

   Answer: False

6. The circumference of a circle is 62.8 cm. What is the diameter? (Use π ≈ 3.14)

   1. 10 cm
   2. 20 cm
   3. 31.4 cm
   4. 6.28 cm
   Show answer

   Answer: 20 cm

7. A circle's circumference is C = 2π × ___.

   Show answer

   Answer: r

8. What is the radius of a circle with area 78.5 m²? (Use π ≈ 3.14)

   1. 25 m
   2. 5 m
   3. 10 m
   4. 12.5 m
   Show answer

   Answer: 5 m

9. A circle with radius 3 has a larger area than a circle with diameter 5.

   Show answer

   Answer: True

10. A circular garden has a diameter of 14 m. What is its area? (Use π ≈ 3.14)

    1. 43.96 m²
    2. 153.86 m²
    3. 615.44 m²
    4. 196 m²
    Show answer

    Answer: 153.86 m²

Get a personalized course on Circumference and Area of Circles built around your child.