Question

what is the : 1:total surface area of hollow cylinder. 2:curved surface area of hollow cylinder.​

Answer 1

Answer:

1. The total surface area of a hollow cylinder is 2π ( r1 + r2 )( r2 - r1 +h), where, r1 is inner radius, r2 is outer radius and h is height.
2. Curved surface area of a cylinder = 2 π r h , where r is the radius and h is the height.

HOPE THIS HELPS YOU

PLZ FOLLOW ME AND MARK MY ANSWER AS BRAINLIST

Answer 2

Answer:

The total surface area of a hollow cylinder is 2π ( r1 + r2 )( r2 - r1 +h), where, r1 is inner radius, r2 is outer radius and h is height.

Curved surface area of a cylinder = 2 π r h