Find the height of a cylinder whose radius is 7 cm and the total surface area is 1012 sq. cm.
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Answer:
T.S.A of cylinder=1012 sq. cm
2 pir(h+r)=1012sq. cm
2×22/7×7(h+7)=1012
h+7=(1012×7)/(2×22)
h+7=23
h=16cm
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