Postby Tony Smith » Sat Aug 19, 2017 9:40 am
Jim,
Its 0.707 x diameter
So if you have a 10" diameter, 10" is the hypotenuse or long side of the square
Pythagorean theorem says the square of the hypotenuse of a right triangle equals the sum of the squares of the other sides so,
a^2 + b^2 = c^2
c=10, so 10 ^2 = 100
Since a square has equal sides, a = b so we can write the equation as
2 a^2 = 100
Dividing both sides by 2 we get
a^2 = 50
Take the square root of both sides giving you
a = sqrt 50 = 7.07
So for a 10" diameter, you can fit a 7.07" square. For any other diameter, you can just multiply 0.707 x diameter
I hope this helps
Tony
The tightrope between being strange and being creative is too narrow to walk without occasionally landing on both sides..." Scott Berkun