Question

A sphere has a volume of 900 cubic inches. Find its surface area to the nearest whole number. I know how to solve it, but I can't figure out how to punch it into my calculator. I have searched it and watched videos and its not working. Please Help!!!

Answer 1

The volume of the sphere is calculated through the equation, 
                           V = 4πr³/3
Substituting, 
                              900 in³ = 4πr³/3       ;   r = 5.99 in

Then, solve for the surface area of the sphere by the equation, SA = 4πr²
                                   SA = 4π(5.99 in)² = 450.80 in²
Thus, in the nearest whole number, SA was calculated to be nearly 451 in².