posted by mary on .
a solid aluminum cube measuring 15 inches on a side is melted and rolled into an aluminum wire tat is 0.2 inches in diameter. what will be the length of this wire?
volume of original cube = 15^3 cubic inches
= 3375 cubic inches
The volume should stay the same.
Think of the wire as a "long" cylinder.
πr^2 h = 3375
π(.1^2)h = 3375
h = 3375/(.01π) = appr. 107430 inches
or appr. 8952 ft