Question

a metal cube of Edge 14 cm is melted into the shape of a cylindrical wire of diameter 0.84 cm what length of wire can we obtain

Answer 1

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Answer 2

Edge of Metal Cube = 14 cm
Volume of metal cube =  a^3
                                    =14^3
                                    = 2744 cm^3

Volume of metal cube = Volume of cylindrical wire
2744 = pi r^2 h
2744 = 3.14 x 0.42 x 0.42 x h
2744 / 3.14 x 0.42 x 0.42 = h
2744 / 0.553896 = h
4953.99 or 4954  (approx)