44 cubic centimeters of silver is drawn into a wire 4 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= 0,4 cm, V= 44 cm^3, L=?
V = r^2 x Pi x L --> L = V/(Pi*r^2) = 0.88 m