 
 <translate> The radius of a cone is 4 m, height 5 m. Find the curved surface area?
Options:
(A) 1
(B) 3
(C) 5
(D) 7
(E) 9 Stream of consciousness first, then make a decision: <ibo> Radius nke cone bụ 4 m, ịdị elu 5 m. Chọta ebe a gbagọrọ agbagọ? Nhọrọ: (A) 1 (B) 3 (C) 5 (D) 7 (E) 9 Mmetụta uche mbụ, mgbe ahụ mee mkpebi: 