Area and Circumference of a Circle Worksheet
Grade 11 Math worksheet covering the calculation of area and circumference of circles, including problems involving radius, diameter, and π.
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Standards
Area and Circumference of a Circle
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Read each question carefully and solve for the area or circumference of the circle. Use π ≈ 3.14 where necessary, and round your answers to two decimal places.
1. Find the circumference of a circle with a radius of 7 cm.
2. Calculate 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 garden has a diameter of 20 feet. What is its area?
5. If the circumference of a circle is 31.4 units, what is its approximate radius?
2.5 units
5 units
10 units
15 units
6. Which formula correctly represents the area of a circle?
A = 2πr
A = πd
A = πr²
A = d/2
7. The distance around a circle is called its .
8. The area of a circle with a radius of 'r' is given by the formula A = .
9. The is the distance from the center of a circle to any point on its edge.
10. Doubling the radius of a circle doubles its circumference.
True
False
11. Doubling the radius of a circle doubles its area.
True
False