Question

Radius of a cone is 7 cm and its heights 24cm, find its surface area?
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Answer 1

Hello mate...

Solution:

Given:

Radius = 7cm.

Height = 24 cm.

TO FIND:

The surface area of the cone.

SOLUTION:

$\bold{ \implies3.14 \times 7 (r + \sqrt{ {24}^{2} + {7}^{2} }) } \\ \bold{ \implies 21.9(7 + \sqrt{576 + 49}) } \\ \bold{ \implies 21.9(7 + 25.5)} \\ \bold{\implies 21.9(32.5)} \\ \bold{ \implies 558.4}$

Therefore, the surface area of the cone = 558.8 cm².

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HOPE THIS HELPS YOU..