Question

the base of a right circular cone has a diameter of 15 cm and its slant height is 8.5 cm find the height of the cone .....plz answer correctly and l Will mark as brainlist​

Answer 1

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✒ The base of a right circular cone has a diameter of 15 cm and its slant height is 8.5 cm. Find the height of the cone

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✒ The Height of cone is 4 cm.

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The Formula for the height of cone is :-

$h = 3 \frac{v}{\pi {r}^{2} }$

Here, it's given cone has a diameter of 15 cm

D = 15 cm

So , R = 15/2 cm

⭐ Slant height is 8.5 cm

We know that,

Slant height = √ r² + h²

8.5 = √ 15/2² + h²

8.5² = 15/2² + h²

8.5² = 7.5² + h²

72.25 = 56.25 + h²

72.25 - 56.25 = h²

h² = 16

h = √16

h = √ 4 × 4

h = 4 cm

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Answer 2

Answer:

Answer:

Radius of the base of the cone = √(10²-8²)=6

Area of a circular cone= πr×l^2

= π× 6×8.5

=3.14× 51

= 160.14