we need to split the triangle by the x axis to find the 2 sides and we know the one to the left is 2 units. But when we split it in half we have a triangle with a side of 6 and 1 units on both sides so hypothenuse will be the same.
6^2+1^2
36+1
37
Square root of 37
6.1
So both the sides are 6.1 and the one on the left is 2 units