Question

what is the number of surface in a closed right circular cylinder

Answer 1

Closed right circular cylinder has 3 surface.

Total surface area of cylinder =
$2\pi \: r(r + h)$
Curved surface area of cylinder =
$2\pi \:rh$
Volume of cylinder =
$\pi \: r {}^{2} h$

I hope this answer is helpful to you..

Thank you