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19-05-2017
Mathematics

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a cylinder has a volume of 175 pie cubic units and a height of seven units what's the diameter

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guernfai0 guernfai0

19-05-2017

πr²h=175
πr²*7=175
Divide both sides by 7
πr²=25
Divide both sides by π (3.14)
r²=7.96
Square root of 7.96=2.82
r=2.82
Diameter is 2r. 2.82*2
2.82*2=5.64

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