What is power?

a. power is the amount of work that is done.

b. power is the ability to do work.

c. power is the rate at which work is done.

d. power is the product of force applied that displaces an object.

c . power is the rate at which work is done.

Explanation:

power = work done/ elapsed time

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2

t = 1/400 h   ⇔ 0.0025 h ⇔ 9s ⇔ 0.15 m

any of the answers are correct.