Question

23. Find the total surface area
Surface area of the cylinder
with diameter 20 cm and height 25cum
​

Answer 1

TSA OF CYLINDER=2$\pi$RH+2 $\pi$ R²

R=20/2=10

=2*22/7*10*25+2*22/7*10*10

=1100/7+4400/7

=5500/7

=785.714 square cm