Question

A solid cylinder of radius r and height his
placed over another cylinder of same height
and radius. The total surface area of the
shape so formed is:
​

Answer 1

Answer:

A solid cylinder of radius r and height h is palced over other cylinder same height and radius . The total surface area of the shape so formed is 4πrh+4πr2.

or

Radius and height of both cylinders are same .

Now , total surface area of this shape

=(2πrh+πr

2

+πr

2

)+(2πrh+πr

2

+πr

2

)

=(4πrh+4πr

2

)

solution