Question 815047
(x+6)^2+(y+4)^2=153 
circle
center | (-6, -4)
radius | 3 sqrt(17)=12.3693
diameter | 6 sqrt(17)=24.7386
area | 153 pi=480.664
perimeter | 6 sqrt(17) pi=77.7187
curvature | 1/(3 sqrt(17))=0.0808452