Question

Tsa of hollow cylinder​

Answer 1

Step-by-step explanation:

hollow cylinder is made up of two thin sheets of rectangle having a length and breadth. Also, the radius of both the cylinders can be r1+r2. Therefore, the surface area of the cylinder is equal to the surface area of both the rectangles which is equal to

2π( r1 + r2)( r1 – r2 +h).

Answer 2

Answer:

TSA of cylinder =pie r ^2 h