Well sure, go w that and see what you get
I suppose you're supposed to convert 100111 from base 2 to base 10. We have

so the missing number is 39.
We know that the Circumcenter is the intersection of a triangle's right (perpendicular) bisectors. Once you have found two of these you can determine their point of intersection.
It is a proven mathematical concept that the third perpendicular bisector will also cross through this intersection point. While it is not necessary to construct all three it is often done so to verify that the intersection of the first two perpendicular bisectors was in fact correct.
13092.50 Canadian dollars equals to $10000 US dollars.