The curved surface area of a right circular cone of radius $11.3$ cm is $355$ cm $^{2}$ . What is its slant height?

Question

The curved surface area of a right circular cone of radius 11-3 cm is 355 cm-2- What is its slant height-8 cm9 cm10 cm11 cm

Toppr Admin · Accepted Answer

Given- radius r-11-3-xA0-cmand curved surface area -355-xA0-cm2-We know- curved surface area of a cone -x3C0-rl11-3-x3C0-l-355l-355-x3C0-xD7-11-3l-10-xA0-cm-xA0-Therefore- option C is correct-

The curved surface area of a right circular cone of radius $11.3$ cm is $355$ cm $^{2}$ . What is its slant height?
$8$ cm
$9$ cm
$10$ cm
$11$ cm

Given, radius $r = 11.3 cm$

and curved surface area $= 355 {cm}^{2}$ .

We know, curved surface area of a cone $= π r l$

$11.3 π l = 355$

$l = \frac{355}{π \times 11.3}$

$l = 10 cm$

Therefore, option $C$ is correct.

The curved surface area of a right circular cone of radius 11.3 cm is 355 cm2. What is its slant height?8 cm9 cm10 cm11 cm

Given, radius r=11.3 cmand curved surface area =355 cm2.We know, curved surface area of a cone =πrl11.3πl=355l=355π×11.3l=10 cm Therefore, option C is correct.

The curved surface area of a right circular cone of radius $11.3$ cm is $355$ cm $^{2}$ . What is its slant height?
$8$ cm
$9$ cm
$10$ cm
$11$ cm

Given, radius $r = 11.3 cm$

and curved surface area $= 355 {cm}^{2}$ .

We know, curved surface area of a cone $= π r l$

$11.3 π l = 355$

$l = \frac{355}{π \times 11.3}$

$l = 10 cm$

Therefore, option $C$ is correct.