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Answer :
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