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The volume of a rectangular block of stone is 10368 dm2 . Its dimensions are in the ratio of 3 : 2 :1. If its entire surface is polished at 2 paise per dm2 , then the total cost will be
One cubic metre piece of copper is melted and recast into a Square cross-section bar 36m long. An exact cube is cut off from this bar. If 1 cubic metr of copper costs Rs. 108, then the cost of this cube is
If the volumes of two cubes are in the ratio of 8:27, then the ratio of their edges is
A sphere of radius 8 cm is melted and recast into small spheres of radius 2 cm each. How many such small spheres are possible ?
The radius of the base of a cylinder is 7m and its height is 15 m. Its total surface area will be
One cubic metre piece of copper is melted and recast into a square cross-section bar 36m long. An exact cube is cut off from this bar. If 1 cubic metre of copper costs Rs. 108, then the cost of this cube is