The slant height of a right circular cone is 10 m and its height is 8 m. Find the area of its curved surface.	Options
A) 30 pi m^2	B) 40 pi m^2	C) 60 pi m^2	D) 80 pi m^2	E) 100 pi m^2
l = 10 m   h = 8 m   r = root(i^2-h^2) = root(10^2 - 8^2) = 6 m   curved surface area = pi ri=60 pi m^2   ANSWER 60 pi m^2
<result>C</result>
The slant height of a right circular cone is 10 m and its height is 8 m. Find the area of its curved surface.