26.4 cubic centimeters of silver is drawn into a wire 2 mm in diameter. What will be the length of the wire in meters?

Question

A brooch is made with silver wire in the form of a circle with diameter 35 mm. The wire is also used in making 5 diameters which divide the circle into 10 equal parts. Find the total length of the silver wire required.

Answer 1

r= 0,2 cm and V= 26.4 cm^3
V = r^2 * Pi * L -->
L = 26.4 cm^3/(0.2cm^2*3.14)= 210 cm= 2.1 m