Question

A sphere of 42mm in diameter is remoulded into a uniform cylindrical wire of diameter 42mm .Calculate length of wire in meters.

Answer 1

Answer:

0.56 m.

Explanation:

πr²L = 4πr³/3

L = 4r/3 = 4x 0.42/3 = 4x0.14 = 0.56 m.