Question

in a cylinder what will be curved surface area if radius is doubled and height is halved​

Answer 1

Answer:The curved surface area will remain same. So, there is no change in the curved surface area of cylinder . Hence the curved surface area will remain same

Step-by-step explanation:

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Answer 2

The surface area would remain the same.

CSA = 2πrh

When r is doubled it will be 2r when height is halved it will be 1/2h or h/2

So new CSA = 2π × 2r× h/2

2 and 2 will get cancelled

CSA = 2πrh