A rectangular sheet of dimensions
25 cm x 7 cm is rotated about its longerside.
Find the volume and the whole
surface area of the solid thus generated.
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⇒Radius will be 7cm
Height will be 25cm
⇒VOLUME = πr^2h
= 22/7×7×7×25
= 22×7×25
= 3850cm^3
TSA = 2πr(h+r)
= 2×22/7×7(25+7)
= 44(32)
= 1408cm^2
CSA = 2πrh
= 2×22/7×7×25
= 44×25
= 1100cm^2
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hey mate here is your answer
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