The curved surface area of a right circular cone whose slant height is 14 cm and base radius is 21 cm is

924 cm²

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232 cm²

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446 cm²

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308 cm²

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Solution

The correct option is
D

924 cm²

Given: Radius (r) = 21 cm, slant height (l) =14 cm

Curved surface area= $π r l = \frac{22}{7} \times 21 \times 14 = 924 c m^{2}$

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14 c m

Find the curved surface area of a right circular cone whose slant height is $10 c m$ and base radius is $7 c m$ .

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