Question

The radius of a cylinder is double and its
curved Surface area is not change then.
What will be the height ?​

Answer 1

Answer:

If the radius of a cylinder is doubled and its curved surface area is not changed, the height must be halved. Let the radius of a cylinder be r and height be h. Again, let it the radius of a cylinder be r = 2r and height be H. Curved surface of a cylinder is not charged, therefore .