SOLUTION: A length of copper wire weighs 1 kg. and is .2 cm in thickness. Determine wire length. A wire is a cylinder. Not sure how to solve.

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Question 1132652: A length of copper wire weighs 1 kg. and is .2 cm in thickness. Determine wire length.
A wire is a cylinder.
Not sure how to solve.
Answer by josgarithmetic(39630) About Me  (Show Source):
You can put this solution on YOUR website!
L is length;
If 0.2 cm "thickness" means "diameter, then volume is pi%2A%280.2%2F2%29%5E2%2AL
or pi%2AL%2A0.1%5E2=pi%2AL%2A0.01=highlight_green%280.01L%2Api%29 cubic centimeters.

Now you need to use the density for copper. You find that yourself and use it. You are given, 1 kilogram of copper.
--

If your reference source tells 8.96 grams per cubic centimeter is density for copper then you have what you need.


You were given 1 kilogram of copper, which is 1000 grams of copper.

%281000%2Agrams%29%2F%280.01L%2Api%2Acm%5E3%29=8.96%28grams%2Fcm%5E3%29

1000%2F%280.01%2AL%2Api%29=8.96
SOLVE FOR L.