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Answer :

Given :

Radius (r) of the base of cone = \(\frac{10.5}{2} cm = 5.25 \) cm

Slant height (l) of cone = 10 cm

We know that, CSA of cone

= \({\pi}rl\)

= [\(\frac{22}{7} × 5.25 × 10\) \({cm}^2\)]

= [\(22 × 0.75 × 10\) \({cm}^2\)]

= 165 \({cm}^2\)

Therefore, the curved surface area of the cone is 165 \({cm}^2\).

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