Question

In the above question, curved surface area of A is ______ curved surface area of B.

Answer 1

In the above question, curved surface area of A is equal curved surface area of B.

Explanation:

For cylinder A, h = 10 cm and r = `10/pi` cm

∴ Curved surface area of A = `2pirh xx 2pi xx 10/pi xx 10` = 200 cm²

Again for cylinder B, r = `5/pi` cm and h = 20 cm

∴ Curved surface area of B = `2pirh = 2pi xx 5/pi xx 20` = 200 cm²

Hence, the curved surface area of both the cylinder are same.