The perimeter of a plot... Need help!

Question

The perimeter of a plot of land in the shape of a right is 72 miles. If the length of one leg of the triangle exceeds the other leg by 6 miles, find the length of each boundary of the land.

the length of the boundaries of the land are __,__,__ miles.

there are three answers

Answer 1

s represents the length of one leg

s + 6 represents the length of the second second

72 - (2s + 6) represents the hypotenuse

s² + (s + 6)² = (66 - 2s)²

Can you solve for s and answer?