If the height of a cone is 16 cm and its base radius is 12 cm, then its curved surface area is ($\pi$ = 3.14)
Answer & explanation
Correct answer: option 4
Height of cone, h = 16
Base radius, r = 12
Let slant height be "l"
$l^2 = h^2 + r^2$
$l^2 = 16^2 + 12^2$ = 256 + 144 = 400
l = 20 cm
Curved Surface area = Πrl = Π*12*20 = 240Π
The correct answer is Option (4) → 753.6 cm2