Please help me on this one would be great help.

2÷6+1/2 to the second power plus one

The lengths of two sides of a right triangle are given. find the length of the third side. round to the nearest tenth if necessary. a) y = 12/5x + 39/5 b) y = 5/12x + 5/39 c) y = 12/5x - 39/5 d) y = 5/12x - 5/39

Use circumcenter theorem to solve for the given values