Asked by Aniket

the total surface area of a cylinder is 440 m square. find the height of cylinder if its radius is 7m.
Answered by Reiny
SA = 2 circles + a rectangle
= 2πr^2 + 2πrh
440 = 2π(49) + 2π(7)h
h = (440- 98π)/(14π) = ...

you do the button-pushing, should get appr 3m
Answered by Sameeha
3meters
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