. The diameter of a metallic sphere is 6 cm
The sphere is melted and drawn into a wire of uniform circular cross - section. If the length of the wire is 36 m, find the radius of its cross - section.
A: 0.8 cm
B: 0.5 cm
C: 0.3 cm
D: 0.1 cm
Let the radius of cylinder be R.
Diameter of sphere =6cm.
So radius of sphere =3cm.
Length of the wire =36m
Volume of sphere = Volume of cylinder
The radius of cylinder is 0.1cm. Hence option D is the correct choice.