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A right cylinder has a diameter of 10 inches and a height of 15.inches What's the surface of the cylinder.

 May 17, 2016
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The TWO ends =  TWO x pi r^2  =   2 * pi * 5^2 = 50 pi

 

The outside   =   pi * d * h =  pi *10 *15 = 150 pi

 

Total surface area   (add them up)     150 pi + 50 pi = 200 pi = 628.32 sq in

 May 17, 2016

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