A closed cylindrical tank of radius 7 am and height 3 cm is made from a sheet of metal. slow much sheet of metal is required? Also Find its volume?
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Answer:
TSA OF CYLINDER:
2πr(h+r)
2×22/7×7(3+7)
=440cm^2
VOLUME OF CYLINDER:
πr^2h
22/7×49×3
=462cm^3
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