Question

What is curved surface area of right circular cone of hight 15 cm and base diameter is 16 cm

Answer 1

the csa of the cone is 427.42 cm 2 when diameter is 16 cm and the height is 15 cm

Answer 2

GIVEN DATA :-

In a cone ,

Height (h) = 15cm

Diameter = 16cm = Radius (r) = 8cm

$l = \sqrt{ {r}^{2} + {h}^{2} } \\ \\ = \sqrt{ {8}^{2} + {15}^{2} } \\ \\ = \sqrt{64 + 225} \\ \\ = \sqrt{289} \\ \\ = 17cm$

TO CALCULATE :- Curve Surface Area (CSA) of the cone.

SOLUTION :-

$csa = \pi r l \\ \\ = \pi \times 8 \times 17 \\ \\ = \frac{22}{7} \times 8 \times 17 \\ \\ = \boxed{csa = 427.42cmsq.}$

Th CSA of the cone is 427.42cmsq. [ANS]