Question

The radius and height of a cone are in the ratio 4 : 3. the area of the base is 2464 cm 2 . find the lateral surface area of the cone.

Answer 1

$lsa \: = \: \pi \: r \: l$
= 22/7 × 28 × 35
= 22 × 4 × 35
= 3080 cm^2

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