1
The general form of the equation of a circle, that has the same radius as the above circle
A. x^2+y^2+60x+14y+98=0
B. x^2+y^2+44x-44y+117=0
C. x^2+y^2-38x+42y+74=0
D. x^2+y^2-50x-30y=0
Ogólna forma równania okręgu o tym samym promieniu, co powyższe koło.
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2
The general form of the equation of a circle x^2+y^2+42x+38y-47=0.
The equation of this circle in standard form is
A. (x-21)^2+(y-19)^2=127
B. (x+21)^2+(y+19)^2=849
C. (x+21)^2+(x+19)^2=851
D. (x-19)^2+(y-21)^2=2,209
The center of the circle at the point
A. (-19,-21)
B. (-21,-19)
C. (19,21)
D. (21,19)
and its radius is
A. 127^{\frac{1}{2}}
B. 849^{\frac{1}{2}}
C. 851^{\frac{1}{2}}
D. 47 \ units
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