Question

What is the covered surface area of a right circular cone of height 5 cm and base radius 12 cm?

Answer 1

l = under root of r^2+h^2

l= √12^+ 5^2

l = 13

c. s. a. of cone = π r l

= 22/7 x 5 x 13

=204.2/7.....

or

204.28cm^2