1.

The diameter of the base of a cone is 10.5 cm, and its slant height is 10 cm. The curved surface area is:​

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Answer:

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Step-by-step EXPLANATION:

let the radius of the cone , r = 10.5/2cm

and slant height , l= 10cm

C.S.A of cone = πrl

= 22/7 × 10.5×10 cm²

= 22 × 15 cm²

= 330 cm²

therefore , the c.s.a. of cone is 330cm².

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