Question

9. The lateral area of a right circular cone is to be determined, which equation fits the requirement?


a) 1/3πr^2h

b) πrl

c) 2πrh

d) 1/2 πrh

Answer 1

Consider a right circular cone with radius of base $r$ and slant height $l$

The lateral area of the cone is $F=\pi rl$

b) πrl