Question

1. The curved surface area of a right circular cone of height 15 cm and

base diameter 16 cm is :-

​

Answer 1

The curved surface of a right circular cone of height 15 cm and base diameter 16 cm is: 116πcm2.

FØŁŁØW MƏ ❤❤✌

Answer 2

Answer:

136π cm2

h = 15 cm, r = 8 cm

So,

$$\eqalign{ & l = \sqrt {{r^2} + {h^2}} \cr & \,\,\,\,\,\, = \sqrt {{8^2} + {{\left( {15} \right)}^2}} \cr & \,\,\,\,\,\, = 17\,cm \cr} $$

∴ Curved surface area :

$$\eqalign{ & = \pi rl \cr & = \left( {\pi \times 8 \times 17} \right){\text{ c}}{{\text{m}}^2} \cr & = 136\pi {\text{ c}}{{\text{m}}^2} \cr} $$