# Calculate the resistance per meter

## Homework Statement

Calculate the resistance per meter at room temperature of a constant wire if diameter $$1.25mm$$. The resistivity of constant a at room temperature is $$5x10^-7\Omega{m}$$

## Homework Equations

I'm not sure, but I think this is the right formula:
$$R = \frac{Pl}{A}$$

## The Attempt at a Solution

$$Area = \pi \times \left(\frac{1.25 \times 10^{-3}}{2}\right)^2$$
$$A = 1.2 \times 10^{-6} m^2$$

What is Pl?