# Each question con

Assertion is correct and Reason is Wrong.

Explanation:

Assertion (A):

Given: A cone of radius 3cm and height 4cm.

CSA of the cone is given by: πrl (here r is radius and l is slant height)

l = √(h2 + r2)

Let S be the CSA of the cone

S = πrl = π × r × √(h2 + r2)

S = π × 4 × √(42 + 32) = π × 3 × √(16 + 9) = π × 3 × √(25) = π × 3 × 5 = 15π

S =15π

Reason (R):

Volume of a cone is : πr2h

Assertion is correct and Reason is Wrong.

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