If the ground distance between points A and B is 500m. long, what is the maximum scale to be used if we use a 20cm. by 20cm. size of paper to plot this distance?
\[
MS = \frac{MD}{GD}
\]
\[
MD = 2x = 10cm.
\]
\[
MS = \frac{10cm. (\frac{1m.}{100cm.})}{500m.}
\]
\[
MS = \frac{1}{5000} \leftarrow \text{answer}
\]