Answer: 9 meters
Explanation:
A line between two opposite corners splits the floor into two right angled triangles, therefore we can use Pythagoras’ Theorem which is:
a^2 + b^2 = c^2
where c is the hypotenuse, and a and b are the other two sides.
Hypotenuse in this question is 15 metres while one side is 12 metres. The length will now be:
a^2 + b^2 = c^2
12^2 + b^2 = 15^2
b^2 = 15^2 - 12^2
b^2 = 225 - 144
b^2 = 81
b = ✓81
b = 9m
The length of the storage unit is 9m