Question

if the radius of cylinder is double and height is halved then the new volume is
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Answer 1

Answer:

Let the radius be 'e'en and height is 'h'

so, the volume of cylinder is =πr^2h

Now, the new radius= 2r

new height = h/2

then, new volume = π(2r) ^2* h/2

= 2πr^2h