1.

From a rectangular solid of metal 42 cm xxx 30 cm xx20 cm a conical cavity of diameter 14 cm and depth 24 cm is drilled out. Find: (i) the surface area of remaining solid (ii) the volume of remaining solid (iii) the weight of the material drilled out if it weighs 7 gm//cm^(3)

Answer»


Answer :(i) 5796 `CM^(2)` (II) 23968 `cm^(3)`(III) 8.624 KG


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