If the circufrence of a sphere is 23 inches, what is the spheres volume?

Question

Thanks, show your work please! easy 10 points!

Answer 1

4/3 * pi * (23/2pi) * (23/2pi) * (23/2pi)

Answer 2

The formula for the volume of a sphere is:

4/3 * π * r^3

Since the circumference is 23", the diameter (d) would be

d = 23/π = 7.32113

and the radius (r) would be 1/2 the diameter or

r = 1/2 * d = 3.66056

Thus, the volume would be

4/3 * 3.14159 * 3.66056^3 = 205.4617 in^3