Question

The curved surface area of a right circular cone of height 15 cm and base diameter 16
cm is ....
(A) 130 pcm (B) 146 pcm (C) 136 pcm (D) 90 pcm​

Answer 1

Step-by-step explanation:

mark as brain list please

Answer 2

  Curved surface area of cone$=427.2566cm^{2}$

Step-by-step explanation:

Given,

Diameter    =$d=16cm$

$r=d/2=16/2=8cm$

Height of cone $h=15cm$

Let slant height of cone is =l cm

$l=\sqrt{r^{2}+h^{2}}$

$l=\sqrt{8^{2}+15^{2}}$

$l=\sqrt{64+225}=\sqrt{289}$

$l=17cm$

Curved surface area of cone$=\Pi \times r\times l$

                                               $=\Pi \times 8\times 17$

Curved surface area of cone$=427.2566cm^{2}$