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Suppose a gas tank is in the shape of a cylinder. The tank is 10 feet long and 5 feet in diameter. Find the amount of metal used to construct the tank. Answer 128.5 ft2 257 ft2 392.6 ft2 196.3 ft2
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we want to find surface area of cylinder
Surface area of cylinder = Lateral Area + top and bottom caps
my answer was 392.6 ft2 am i wrong?
Surface area = 2*Pi * R * H + 2* Pi * R^2
use that equation
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remember radius = half diameter
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