To be a right triangle, the hypotenuse^2 must equal side1^2 + side2^2
Only set 2 meets these conditions
8, sq root (29), sq root (35) then squaring these:
64, 29, 35
64 = 29 + 35
D for doodleeeeeeeeeeeeeee
The appropriate spreadsheet is the one that makes use of the proper formula and appropriate cell references.
The answer I think at least would be C