Re-write Pythagorean Theorem but use S for the legs and D for the hypotenuse.

Answer 1

well, the original notation is usually
c^2 = a^2 + b^2
so make the necessary changes.

Answer 2

c^2 = s^2 + s^2 = 2s^2.

Answer 3

Correction: c^2 = S1^2 + S2^2.

Answer 4

D^2 = S1^2 + S2^2.