Practicing Success
The diameter of a copper sphere is 6 cm. It is beaten and drawn into a wire of diameter 0.2 cm. What is the length of the wire? |
36 cm 360 cm 3600 cm 306 cm |
3600 cm |
Diameter of sphere = 6 cm Diameter of wire = 0.2 cm Volume of cylindrical wire = Volume of sphere $⇒πr^2h=\frac{4}{3}πR^3⇒\frac{4}{3}×\frac{22}{7}×3^3×\frac{7}{22}×\frac{1}{0.01}=3600cm$ ∴ Length of wire is 3600 cm. |