I am in University Physics II and I am lost with this HW problem. Please show...

Question:

I am in University Physics II and I am lost with this HW problem. Please show all the steps to solve it. Thank you!

2. A resistor is made to connect two wires of circular cross-section with radii of 1.00 mm and 2.54 mm. The resistor is made 5.25 cm in length and has a linearly varying radius between the ends that meet the wires (that is, dr/dx is constant). It carries a current of 36.3 μA under a potential difference of 4.40 V. What is the resistivity of the material composing it? (Note: On the figure, diameters are indicated, and the figure is not to scale.) ai00 2.00 ← mm、L 5.25> cm , 5.25 5.08

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