SOLUTION: a sphere has a volume of 972pi cubic inches, what is the surface area

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Question 393987: a sphere has a volume of 972pi cubic inches, what is the surface area
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
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a sphere has a volume of 972pi cubic inches, what is the surface area
:
Find r using the Volume of a sphere formula
4%2F3pi%2Ar%5E3 = 972pi
Divide both sides by pi
4%2F3r%5E3 = 972
r%5E3 = 972*3%2F4
r%5E3 = 729
r = 3sqrt%28729%29
r = 9 inches
:
Surface area formula SA = 4%2Api%2Ar%5E2
:
SA = 4%2Api%2A9%5E2
SA = 324pi
or
SA = 1017.876 sq inches