The slant height of a cone is 12 cm and radius of the base is 4cm, find the curved surface of the cone.	Select.
A) 49 π cm2	B) 40 π cm2	C) 48 π cm2	D) 43 π cm2	E) 41 π cm2
Explanation:   π * 12 * 4 = 48   Answer: Option 48 π cm2
<result>C</result>
The slant height of a cone is 12 cm and radius of the base is 4cm, find the curved surface of the cone.