>>575
(a,b,c) = (5,6,9)
　O (13/8，9/2)　　R = 85/8,
　x = 12,

(a,b,c) = (4,5,3)
　O(0.67255239004416，-1.03758731674027)　　R = 4.84055882713771
　x = 3.58885562536879

(a,b,c) = (5,6,3)
　O(0.573818085970165，-2.04527234388066)　　R = 5.60727128955247
　x = 3.39674390621436

(a,b,c) = (3,2,4)
　O (-1.10298913452835，0.613994567264175)　　R = 3.65095110537757
　x = 2.46720496707275