Find the height of a cylinder whose radius is 7 cm and surface area is 1078 sq.cm
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2*22/7*r*h + 2*22/7*r*r
=2*22/7*r(h+r) = 1078
=2*22/7*7(h+7) = 1078
=2*22(h+7) = 1078
=(h+7) = 1078/44
=h=(1078-308)/44
h = 770/44 = 385/22
=2*22/7*r(h+r) = 1078
=2*22/7*7(h+7) = 1078
=2*22(h+7) = 1078
=(h+7) = 1078/44
=h=(1078-308)/44
h = 770/44 = 385/22
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