 
 <translate> Cone curved surface area = πrl = 22/7 × 4 × 5 = 440/7 = 62 6/7
Slant height (l) = √r(power2)+h(power2) = √16+9 = √25 = 5
Thus, the answer is (C). <hau> Yankin da ke cikin kusurwa mai kusurwa = πrl = 22/7 × 4 × 5 = 440/7 = 62 6/7 Slant tsawo (l) = √r(power2) + h(power2) = √16+9 = √25 = 5 Saboda haka, amsar ita ce (C). 