Question

if the radius of cylinder is halved and height is doubled ,what will be the curved surface area​

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.

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Answer 2

Answer:

The curved surface area will remain same.

Step-by-step explanation:

Let the radius of cylinder be r

Let the height of the cylinder be h

Curved surface area of cylinder =  

Now we are given that the radius is doubled and height is halved

r = 2r

h = h/2

So, new curved surface area of cylinder =  

                                                                  =  

So, there is no change in the curved surface area of cylinder .

Hence the curved surface area will remain the same