Then x 2+(y+3) 2 = r 2 in the triangle EBO.

Y 2+(6-x) 2 = r 2 in triangle fo' a.

2X+6Y=7。

C0''=0''A again.

Then 2+X=6-X

Then X=2.

Y=0.5。

Then r 2 = 65/4.

In EDD triangle, oo' 2+o' d 2 = od 2.

Alternative outer diameter =3.5

Then d (0 0,4)