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Volume and Surface Area of Solid Figures

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  1. A cylindrical piece of metal of radius 2 cm and height 6 cm is shaped into a cone of same radius. The height of the cone is ?
    1. 18 cm
    2. 14 cm
    3. 12 cm
    4. 8 cm
Correct Option: A

∴ 1/3 π x (2)2 x h = π x (2)2 x 6
⇒ h = 18 cm


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