Solve the Problem

Multiple Choice

Solve the problem. Round to the nearest tenth unless indicated otherwise.
-The resistance of a wire varies directly as the length of the wire and inversely as the square of the diameter of the wire. A 20 foot length of wire with a diameter of 0.1 inch has a resistance of
3 ohms. What would the resistance be for a 48 foot length, with diameter 0.01 inch, of the same
Kind of wire ?

A) 720 ohms
B) 717.5 ohms
C) 713 ohms
D) 732 ohms