A solid brass sphere of radius 15 cm is drawn into a wire of diameter 6 mm. The length (in cm) of the wire is:

50000 60000 55000 45000

50000

We know that, Volume of sphere = \(\frac{4}{3}\) πr3 Radius of sphere = 15 cm Diameter of wire = 6mm = 0.3 cm Then the radius = 3mm Volume of cylinder =  πr2l \(\frac{4}{3}\) × π × 153 = π × 0.32 × l l = 50000 cm