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In a right circular cone, the radius ...

In a right circular cone, the radius of its base is 7 cm and its height is 24 cm. A cross-section is made through the mid-point of the height parallel to the base. The volume of the upper portion is (a) 154 cm3    (b) 169 cm3    (c) 800 cm3    (d) 1078 cm3

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