The slant height of a cone is 20 cm and radius of the base is 10 cm, find the curved surface of the cone.	Choose the correct choice from the following options:  A) 330  B) 159  C) 150  D) 200  E) 628
π * 10 * 20 =628   Answer:628
<result>E</result>
The slant height of a cone is 20 cm and radius of the base is 10 cm, find the curved surface of the cone.