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Volume and Surface Area of Solid Figures

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  1. The curved surface area of a right circular cone of radius 14 cm is 440 sq cm. what is the slant height of the cone ?
    1. 10 cm
    2. 11 cm
    3. 12 cm
    4. 13 cm
Correct Option: A

Curved surface area of right circular cone = πrl
∴ 440 = (22/7) x 14 x l
⇒ l = (440 x 7) / (22 x 14) = 10 cm


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