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The curved surface area of a cone is 1980 cm2 and its radius is 21cm, what is the slanted height of a cone? (Take π = \(\frac{22}{7}\))

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Total surface area of a right circular cone = π(r + l) r.

Volume of a right circular cone = 1/3π r2 h.


The curved surface area of a cone is 1980 cm<sup>2</sup> and its radius is 21cm, what is the slanted height of a cone? (Take π = \(\frac{22}{7}\))






 
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