Question

find the curved surface area of cylinder whose height is 28cm and radius of the base is 12cm​

Answer 1

Answer:

We no that curved surface area of a cylinder = 2πrh

Here, the radius of the the cylinder is is 12 cm

and the height of the cylinder is 28cm

So, 2×π×r×h

=2×22/7×12×28

=2112cm

Therefore, the curved surface area of the cylinder will be 2112cm^2.

Step-by-step explanation:

Hope my answer would be helpful to you.

Answer 2

Answer:

The height of the cylindrical body = 28 cm

The radius of the base = 12 cm

We know area of cylinder

= A = 2πrh + 2r^2

=( 2 × 22 /7 + 2×12^2) cm^2

= 4512 cm^2 (Ans)