Answer:
Ok, so we have a square with sides of 14 inches. :)
The diagonal splits the square into two by the corners, so it forms two right triangles!
We can use the Pythagorean theorem on the right triangle to get:
14^2 + 14^2 = x^2
BTW, x is the length of the diagonal :)
So, 196 + 196 = x^2 = 392
Sooo, x is just the square root of 392 :)
[tex]\sqrt{392}\\[/tex] = 19.7989898732, which rounds to 20
