Solution:
Given:
From the question, the tent can be sketched as shown below;
Since the zipper acts as a perpendicular bisector to the base of the tent, the base is split into two equal parts.
From the sketch, a right triangle can be drawn out to get the side of the tent.
Using Pythagoras theorem to get the side of the tent,
Hence,
Therefore, the distance of the side of the tent is 13 feet.