you can make a triangle in the corner with legs length s/2 and the angles are 45 degrees. in a 45 45 90 triangle, the legs are h/sqrt(2) where h is the hypotenuse. this means that s/2=9/2 sqrt(2), s=9 sqrt(2)
and s^2=162
Answer from: Quest
Istg idk..if there all the same length there all the same number but use google
Answer from: Quest
Idonβt exactly understand but i think dbc=rst
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