The radius of a solid sphere of a metal is 3 cm. How long wire of diameter 4 mm can be drawn from it?

Question

CollectorBabu · Accepted Answer

Correct Answer: 9.0 mt.. Given, Radius of solid sphere = 3cm or 30 mm Diameter of long wire is 4 mm Vol of sphere = 4/3 πR 3 = 4/3 *π * 30*30*30 = 40 π 30 2 ……………(1) Diameter of spherical circular cylinder = 4 mm r     =  2 mm Volume of cylinder = π r 2 h Volume of wire will be equal to volume of cylinder 40*π*30*30  =  π * 2 *2 * h H = 40*30*30 / 2*2 H = 9000 mm Or H = 900 cm Or H = 9 mt. Hence option B is correct answer.

The radius of a solid sphere of a metal is 3 cm. How long wire of diameter 4 mm can be drawn from it?

Contact Information

Services