Homework Help: maths

Posted by maihul on Friday, November 30, 2012 at 7:34am.

The perimeter of the base of a cylinder is as same as the perimeter of a square whose one side is 11 cm. If the volume is 98π cm3, the height of the cylinder will be :

maths - Reiny, Friday, November 30, 2012 at 8:49am
perimeter of square = 4(11) = 44

let the radius of the cylinder be r

2πr = 44
r = 22/π

vol of cyl = πr^2 h

π(484/π^2)(h) = 98π
484h/π = 98π
h = 98π^2/484 = appr 7.74

check my arithmetic

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