Question

how do we get TSA of hallow cylinder​

Answer 1

Step-by-step explanation:

A cylinder is a solid which has a uniform, circular cross-section.

Curved surface area of a cylinder = 2 π r h. ...

Total surface area of a cylinder = 2 π r h + 2 π r2 ...

Curved surface area of a hollow cylinder = 2 π R h + 2 π r h. ...

Total surface area of a hollow cylinder = 2 π R h + 2 π r h + 2 (π R2 − π r2)

Answer 2

Answer:

the total surface area of a hollow cylinder is

$2\pi(r1 + r2)(r2 - r1 + h)$

Where r1 is inner radius , r2 is outer radius and h is height