if the radius of the cylinder is halved and height is doubled, then the curved surface area will be. (a) increased 1 ,(b) the same,(c) double,(d) triple
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Volume of cylinder trh
r Now, if r = &h 2 = h2
New CSA = 2trh
=
2T = (6) x (h x 2)
= 2Trh
It will remain same
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