Area and Circumference of Circles
This worksheet focuses on calculating the area and circumference of circles, including problems involving radius, diameter, and word problems.
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Area and Circumference of Circles
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Read each question carefully and solve for the area or circumference of the given circles. Use π ≈ 3.14 for all calculations unless otherwise specified. Show your work.
1. Calculate the circumference of a circle with a radius of 7 cm.
2. Find the circumference of a circle with a diameter of 15 inches.
3. Determine the area of a circle with a radius of 9 meters.
4. A circular pond has a diameter of 20 feet. What is its area?
5. The distance around a circle is called its .
6. The space occupied by a circle is called its .
7. The formula for the circumference of a circle using the radius (r) is C = .
8. The formula for the area of a circle using the radius (r) is A = .
9. If the circumference of a circle is 31.4 cm, what is its approximate diameter?
5 cm
10 cm
15 cm
20 cm
10. Which of the following is the correct unit for the area of a circle?
cm
cm²
cm³
none of the above
11. A circular garden has a circumference of 62.8 feet. What is the area of the garden? (Use π ≈ 3.14)
12. A pizza has a diameter of 14 inches. If it is cut into 8 equal slices, what is the area of one slice?
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