The curved surface area of a right circular cone of height 12 cm and base diameter 10 cm is:
Answer & explanation
Correct answer: option 1
Cone height, H = 12 cm
Base Dia D = 10 cm
r = 5 cm
Slant Height, L = sqrt(122 + 52) = sqrt (169) = 13
Curved surface area = πrL = π*5*13 = 65π
The correct answer is Option (1) → $65 π\, cm^2$