Question

If two solid hemispheres of the same base radius r are joined together along their bases, then curved surface area of this new solid is ______.

Options

• 4πr²

• 6πr²

• 3πr²

• 8πr²

Answer 1

If two solid hemispheres of the same base radius r are joined together along their bases, then curved surface area of this new solid is 4πr².