SOLUTION: A spherical balloon is inflated so that its diameter is 40 ft.Find the surface area in the balloons covering and the volume of the gas.Show solutions and formulas.

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Question 159743: A spherical balloon is inflated so that its diameter is 40 ft.Find the surface area in the balloons covering and the volume of the gas.Show solutions and formulas.
Answer by ankor@dixie-net.com(12695) About Me  (Show Source):
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A spherical balloon is inflated so that its diameter is 40 ft. Find the surface area in the balloons covering and the volume of the gas. Show solutions and
formulas.
:
Two formulas needed here
Vol = %284%2F3%29pi%2Ar%5E3
and
Surface Area = 4%2Api%2Ar%5E2
:
radius = 40/2 = 20 ft
:
S.A = 4%2Api%2A20%5E2
S.A = 5026.548 sq ft
and
V = %284%2F3%29pi%2A20%5E3
V = 33,510.32 cu ft