Name:    Lesson 6: Calculating the Area of a Circle

1.

What is the area of a circle with a radius of 3 m?

r = 3 m
 a. 28m2 b. 32 m2 c. 61 m2 d. 15 m2

2.

What is the area of a circle with a radius of 2.7 m?
 a. 14.5 m2 b. 34.6 m2 c. 22.9 m2 d. 67.3 m2

3.

What is the area of a circle with a radius of 10.4 mm2?
 a. 213.8 mm2 b. 67.9 mm2 c. 339.8 mm2 d. 12.5 mm2

4.

What is the area of a circle with a radius of 9.9 mm?
 a. 307.9 mm2 b. 420.9 mm2 c. 67.3 mm2 d. 13.4 mm2

5.

What is the area of a circle with a diameter of 12.4 cm?
 a. 45.4 cm2 b. 32.1 cm2 c. 120.8 cm2 d. 986.4 cm2

6.

What is the area of a circle with a diameter of 75.3 cm?
 a. 754.3 m2 b. 123.7 m2 c. 4453.3 m2 d. 198.6 m2

7.

What is the area of a circle with a diameter of 76.4 mm?
 a. 4584.3 mm2 b. 5643.1 mm2 c. 18.7 mm2 d. 5647.9 mm2

8.

What is the radius of a circle if the area is 30 604.42 mm2?
 a. 12.50 mm b. 34.50 mm c. 65.70 mm d. 98.70 mm

9.

What is the radius of a circle if the area is 17.35 m2?
 a. 5.6 m b. 2.35 m c. 2.3 m d. 1.2 m

10.

What is the radius of a circle if the area is 214.86 m2?
 a. 3.45 m b. 7.22 m c. 8.27 m d. 9.57 m