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A solid metallic sphere of radius 8 cm is melted and drawn into a wire

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| A solid metallic sphere of radius 8 cm is melted and drawn into a wire of uniform cross-section. If the length of the wire is 24cm, then its radius (in mm) is :

A. 6

B.

C. 5

D.

Right Answer is: B

SOLUTION

Radius of sphere = 8cm = 80mm

Length of wire(H) = 24m = 24000mm

A.T.Q.

Vol. of sphere = Vol. of cylinder

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    1. A solid metallic sphere of radius 8 cm is melted and drawn into a wire

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