Question

The radius of a metallic solid sphere is 9 cm. It is melted and recast
into a cylindrical wire of diameter of cross section 0.2 cm. Determine
the length of this wire.
please answer me fast..​

Answer 1

Answer:

For sphere:

d = 9 cm r = cm

Volume of sphere = r3 = cu. cm

For wire/ cylinder:

Diameter of cylinder = 0.2 cm R = 0.1 cm

Volume of cylinder = r2h = (0.1)2 h

The sphere is melted to form a cylindrical wire.

Volume of sphere = volume of cylinder

= (0.1)2h

h = = 12150 cm = 121.5 m

Thus, the length of the wire is 121.5 m.

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