The diameter of a bicycle wheel is 20 in. What is the area of the wheel? ( Use 3.14 for pi) A = pi r^2
a. 62.8 square inches
b. 1,256 square inches
c. 314 square inches
d. 15.7 square inches
First, we need to find the radius of the wheel. The radius is half of the diameter, so the radius is 20 in / 2 = 10 in.
Next, we use the formula for the area of a circle: A = πr^2
A = 3.14 * 10^2
A = 3.14 * 100
A = 314 square inches
Therefore, the correct answer is:
c. 314 square inches