What is 5 x 2 + 3 to the power of 2

Can (3,5 and square root 34) be sides on a right triangle?

Find the roots of the equation below. x^2 - 6 + 9 = 0

Which shows the correct lengths of side c in both scales? scale 1: 45 m; scale 2: 60 m scale 1: 60 m; scale 2: 45 m scale 1: 36 m; scale 2: 27 m scale 1: 27 m; scale 2: 36 m mark this and return save and exit