The slant height of a cone is 12 cm and radius of the base is 4cm, find the curved surface of the cone.
Choose the correct choice from the following answers:
A) 33  B) 77  C) 48  D) 99  E) 61
π * 12 * 4 = 48   Answer:48
<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.