>What's the length of the diagonals?
if the sides of the outside square are "x" and the sides of the inside square are "y" and the diagonals are "z" then:
y/x(10)`2=z
.5 is the unit measurment of the distance of the small square edge from the outer square. 10 is just an integer value to achieve the proper numerical outcome.
2/1(10)`2=z
.5(10)=z
5(.25)=z
1.25=z
therefore the length of Z is 1.25units.