A solid cylinder to radius r and height h is placed over other cylinder of same height
and radius. The total surface area of the shape so formed is 4trh + 4tr. Is it true.
Justify your answer.
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Answer:yes it is rig
ht
Tsa of one cylind
er is: 2trh+ 2tr2
then
two cylinder's tsa is 2(2trh+2tr2)
= 4trh+4tr2
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