me assume yu wanna find out sumthun bout a SERKEL
that yer 2 points be on rim av serkel...points=(-17,6) & (11,-4)
If assume diameter konnekt the 2 points, then serkel senter=middel av line tween 2 points
middel: x...(11-17)/2=-6/2=-3
y...(6-4)/2=2/2=1, so serkel senter=(-3,1)
distans tween points...deltax=11-(-17)=28...deltay=6-(-4)=10
distans=sqrt(28^2 +10^2)=sqrt(784+100)=sqrt(884)=29.73213749...serkel wide