A copper solid cylinder of radius 14 cm and height 10 cm is melted and A recast into cylindrical wire of diameter 4 mm. Find the length of the copper wire.
2.10 cylindrical pillars of a building have to be painted. If the diameter of each pillar is 50 cm and the height 4 m. What will be the cost of painting at the rate of 50 paise per sq. (Use t = 3.1416 m?
some one plz solve
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166729292898@88rw GT tyhgAet
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