A copper rod (solid cylinder) of diameter 2 cm and length 10 cm is melted and drawn into a wire of uniform thickness with diameter 0.4 cm.
Find the length of the wire (in cm).

Question

A copper rod (solid cylinder) of diameter 2 cm and length 10 cm is melted and drawn into a wire of uniform thickness with diameter 0.4 cm. Find the length of the wire (in cm).

Accepted Answer

250. Rod V = π*1^2*10 = 10 π. Wire radius 0.2 cm: π*(0.2)^2*L = 10 π => 0.04*L = 10 => L = 250 cm.

A copper rod (solid cylinder) of diameter 2 cm and length 10 cm is melted and drawn into a wire of uniform thickness with diameter 0.4 cm.
Find the length of the wire (in cm).

Step-by-Step Solution

Master this chapter in 30 minutes a day.

More Class 10 Conversion of Solids practice

A copper rod (solid cylinder) of diameter 2 cm and length 10 cm is melted and drawn into a wire of uniform thickness with diameter 0.4 cm.Find the length of the wire (in cm).

Step-by-Step Solution

Master this chapter in 30 minutes a day.

More Class 10 Conversion of Solids practice

A copper rod (solid cylinder) of diameter 2 cm and length 10 cm is melted and drawn into a wire of uniform thickness with diameter 0.4 cm.
Find the length of the wire (in cm).