30 circular plates, each of radius 14 cm and thickness 3 cm are placed one above the another to form a cylindrical solid. Find the total surface area and volume of the cylinder so formed.
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as they are place one upon one h=90
tsa of cylinder=2πr(h+r)
=2×22/7×90×14
=7920sqcm
v=πr^2h
=22/7×14×14×90
=5544cucm
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