Choose the letter of the correct answer.
1. The radius of a circle is 9 cm. What is the area?
a. A= 254.34 cm2
b. A= 354.34 cm
C. A=454.34 cm2
d. A= 554.34 cm2

2. The diameter of a bicycle wheel is 20 in. What is the area of the wheel?
a. A= 316 in²
b. A= 314 in²
c. A= 312 in²
d. A= 310 in²

3. The radius of a circular rug is 4 feet. What is the area?
a. A = 70.24 ft²
b. A = 60.24 ft²
C. A = 50.24 ft²
d. A = 40.24 ft²​