II. Solve the following problems and write the letter of your answer on the space
provided before each number.
6. The radius of a circle is 4 centimeters. What is the area?
a. 20.54 cm? b. 24.50 cm?
C. 42.50 cm?
d. 50.24 cm?
7. The diameter of a circle is 12 m. What is the area?
a. 452.16 m2 b. 454.16 m2 C. 456.16 m2 d. 458.16 m2
8. The radius of a circular rug is 5 feet. What is the area?
a. 73.5 feet? b. 75.5 feet2 c. 78.5 feet? d. 76.5 feet?
9. If the diameter of a circular wall clock is 30 cm, what is the area of the
clock?
a. 2628 cm?
b. 2682 cm?
c. 2826 cm2 d. 2862 cm
10. Find the area of a circular pool whose radius is 2 meters.
a. 10.56 m2 b. 12.56 m2
c. 12.26 m2 d. 15.26 m?
provided before each number.
6. The radius of a circle is 4 centimeters. What is the area?
a. 20.54 cm? b. 24.50 cm?
C. 42.50 cm?
d. 50.24 cm?
7. The diameter of a circle is 12 m. What is the area?
a. 452.16 m2 b. 454.16 m2 C. 456.16 m2 d. 458.16 m2
8. The radius of a circular rug is 5 feet. What is the area?
a. 73.5 feet? b. 75.5 feet2 c. 78.5 feet? d. 76.5 feet?
9. If the diameter of a circular wall clock is 30 cm, what is the area of the
clock?
a. 2628 cm?
b. 2682 cm?
c. 2826 cm2 d. 2862 cm
10. Find the area of a circular pool whose radius is 2 meters.
a. 10.56 m2 b. 12.56 m2
c. 12.26 m2 d. 15.26 m?
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6. d.
Solution:
A = πr²
A = (3.14) (4 cm)²
A = (3.14) (16 cm²)
A = 50.24 cm²
7. a.
Solution:
A = πd²
A = (3.14) (12 m)²
A = (3.14) (144 m²)
A = 452.16 m²
8. c.
Solution:
A = πr²
A = (3.14) (5 ft)²
A = (3.14) (25 ft²)
A = 78.5 cm²
9. c.
Solution:
A = πd²
A = (3.14) (30 cm)²
A = (3.14) (900 cm²)
A = 2826 cm²
10. b.
Solution:
A = πr²
A = (3.14) (2 m)²
A = (3.14) (4 m²)
A = 12.56 m²