Question

The grade of a rod is its slope error as a percent find the grade of the road shown

Answer 1

The slope of the line is given by:

$\begin{gathered} \text{Slope}=\tan (\frac{3}{12})=4.363350821\times10^{-3} \\ \text{Slope}=0.436335\text{ percent} \end{gathered}$

So the slope in percent is 0.436355% which can be rounded to 0.44%.