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Aman found the curved surface area of a cone with $r = 6$ cm and $h = 8$ cm as π × $6 \times 8 = 48$ π $cm^{2}$ . What is the correct value?

Class 9Surface Area of a ConeMensuration

A60π $cm^{2}$
B84π $cm^{2}$
C96π $cm^{2}$
D48π $cm^{2}$

Step-by-Step Solution

Aman used the height instead of the slant height.

l

= √

(36 + 64) = 10

, so CSA = π ×

6 \times 10 = 60

π

cm^{2}

.

Answer: A) 60π

cm^{2}

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