Find the distance between the points (0, 0) and (36, 15). Can you now find the distance between the two towns A and B discussed in Section 7.2.

The coordinates of point A are (0, 0) and coordinates of point B are (36, 15).
To find the distance between them, we use Distance formula:
d = \(\sqrt{(36-0)^2 + (15 - 0)^2} \)
\( = \sqrt{36^2 - 15^2} \)
\( = \sqrt{1296 + 225} \)
\( = \sqrt{1521} \)
\( = 39\)km