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If `h ,\ S\ a n d\ V` denote respectively the height, curved surface area and volume of a right circular cone, then `3piV h^3-\ S^2h^2+9V^2` is equal to (a) 8 (b)0(c)`4pi`(d)`32pi^2`

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RD SHARMA ENGLISH-SURFACE AREA AND VOLUME OF A RIGHT CIRCULAR CYLINDER CONE-All Questions
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