The perimeter of a square court is 39 yards.What is the length of each side?
When it comes to squares, what is one PROPERTY that's related to their sides?
If you do not know, look it up, and you should be able to answer the question.
Nowadays, there are TONS of available information, especially on the internet, unlike in the olden days when the library was the only,
or the main source of information.