Question

Two identical solid hemispheres of equal base radius r cm are stuck together along their bases. The total surface area of the combination is 6πr².

Answer 1

False

Curved surface area of a hemisphere = 2 πr²

Here, two identical solid hemispheres of equal radius are stuck together. So, base of both hemispheres is common.

∴ Total surface area of the combination

= 2 πr² + 2 πr² = 4πr²