Question

what is the T.S.A of cone having radius r/2and slant height 2l

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Answer 1

Answer :-

• T.S.A. of Cone = πr (r + L/4).

Explanation :-

Given :

• Radius of a Cone = r/2.
• Slant Height = 2L.

To Find :

• T.S.A. of Cone.

Solution :

We know that,

T.S.A. of Cone = = πr(l + r).

Put the values.

⇒ T.S.A. of Cone = = π × r/2(2L + r/2).

⇒ T.S.A. of Cone = = π (r²/4 + rL).

⇒ T.S.A. of Cone = = π (r² + 4rL/4).

⇒ T.S.A. of Cone = = πr (r + L/4).

Therefore, T.S.A. of Cone = = πr (r + L/4).

Answer 2

Step-by-step explanation:

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