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11-05-2017
Mathematics

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Find the height of a cylinder with a surface area of 300cm squared and a radius of 5

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11-05-2017

SA= 2 pi r h + 2 pi r^2
300= 2 pi (5) h + 2 pi (5)^2
300= 31.415h + 157.079
Mine s 157.079
142.921= 31.415h
Divide by 31.415
h= 4.5

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