Odpowiedzi

2010-01-09T00:10:29+01:00
R=4
x^2+y^2-8x+10y-3=0
(x-4)^2-16+(y+5)^2-25-3=0
(x-4)^2+(Y+%)^2=44=4*11
r=√(4*11)=2√11