Circle equation

(the database of solved problems)

All the problems and solutions shown below were generated using the Circle equation Calculator.

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ID	Problem	Count
2701	Find the center and radius of the circle $ x^2 + y^2 + 2 x -8 y +1 = 0 $.	2
2702	Find the center and radius of the circle $ x^2 + y^2 + 8 x + 4 y + 16 = 0 $.	2
2703	Find standard equation of a circle with a center at $ \color{blue}{C = \left( 2 , -3 \right)} $ and radius $ \color{blue}{ 144 }$	2
2704	Find the center and radius of the circle $ x^2 + y^2 + 2 x -6 y + 14 = 0 $.	2
2705	Find the center and radius of the circle $ x^2 + y^2 -x + 3 y -5 = 0 $.	2
2706	Find the center and radius of the circle $ x^2 + \left( y + 8 \right)^2 = 64 $.	2
2707	Find the center and radius of the circle $ x^2 + y^2 + 4 y + 21 = 0 $.	2
2708	Find the center and radius of the circle $ x^2 + y^2 + 14 x + 6 y -42 = 0 $.	2
2709	Find the center and radius of the circle $ x^2 + y^2 + 14 x + 6 y + 42 = 0 $.	2
2710	Find standard equation of a circle with a center at $ \color{blue}{C = \left( 15 , 12 \right)} $ and radius $ \color{blue}{ 4 }$	2
2711	Find standard equation of a circle with a center at $ \color{blue}{C = \left( -\frac{ 13 }{ 4 } , \frac{ 27 }{ 2 } \right)} $ and radius $ \color{blue}{ \sqrt{ \frac{ 1989 }{ 16 } } }$	2
2712	Find standard equation of a circle with a center at $ \color{blue}{C = \left( 1 , -3 \right)} $ and radius $ \color{blue}{ \frac{ 71 }{ 10 } }$	2
2713	Find the center and radius of the circle $ x^2 + y^2 +x +y -32 = 0 $.	2
2714	Find the center and radius of the circle $ x^2 + \left( y - 5 \right)^2 = 27 $.	2
2715	Find the center and radius of the circle $ x^2 + \left( y - 3 \right)^2 = 0 $.	2
2716	Find the center and radius of the circle $ \left( x + 10 \right)^2 + \left( y - 4 \right)^2 = 0 $.	2
2717	Find the center and radius of the circle $ x^2 + y^2 + 4 x -18 y -15 = 0 $.	2
2718	Find the center and radius of the circle $ x^2 + y^2 -2 x -6 y -26 = 0 $.	2
2719	Find the center and radius of the circle $ \left(x - 5 \right)^2 + \left( y + 3 \right)^2 = 3 $.	2
2720	Find standard equation of a circle with a center at $ \color{blue}{C = \left( -26 , 2 \right)} $ and radius $ \color{blue}{ 4 }$	2
2721	Find standard equation of a circle with a center at $ \color{blue}{C = \left( 6 , -2 \right)} $ and radius $ \color{blue}{ 4 }$	2
2722	Find standard equation of a circle with a center at $ \color{blue}{C = \left( -5 , -1 \right)} $ and radius $ \color{blue}{ 4 }$	2
2723	Find the center and radius of the circle $ x^2 + y^2 + 4 x -8 y -5 = 0 $.	2
2724	Find the center and radius of the circle $ x^2 + y^2 -x + 2 y -21 = 0 $.	2
2725	Find standard equation of a circle with a center at $ \color{blue}{C = \left( 3 , -6 \right)} $ and radius $ \color{blue}{ \sqrt{ 7 } }$	2
2726	Find the center and radius of the circle $ \left( x + 6 \right)^2 + \left( y + 2 \right)^2 = 0 $.	2
2727	Find the center and radius of the circle $ x^2 + y^2 -6 x -516 = 0 $.	2
2728	Find the center and radius of the circle $ x^2 + y^2 + 2 x -3 y -\frac{ 3 }{ 2 } = 0 $.	2
2729	Find the center and radius of the circle $ \left(x - 6 \right)^2 + \left( y + 3 \right)^2 = 107 $.	2
2730	Find the center and radius of the circle $ \left(x - \frac{ 13 }{ 2 } \right)^2 + \left( y - \frac{ 17 }{ 2 } \right)^2 = 92 $.	2
2731	Find the center and radius of the circle $ \left( x + 7 \right)^2 + \left( y - 9 \right)^2 = \frac{ 225 }{ 4 } $.	2
2732	Find the center and radius of the circle $ \left(x - \frac{ 19 }{ 2 } \right)^2 + \left( y + 2 \right)^2 = \frac{ 121 }{ 4 } $.	2
2733	Find the center and radius of the circle $ x^2 + y^2 -121 = 0 $.	2
2734	Find the center and radius of the circle $ x^2 + y^2 -14 x + 40 = 0 $.	2
2735	Find standard equation of a circle with a center at $ \color{blue}{C = \left( 0 , 6 \right)} $ and radius $ \color{blue}{ \sqrt{ 17 } }$	2
2736	Find the center and radius of the circle $ x^2 + y^2 + 6 x + 14 y + 43 = 0 $.	2
2737	Find the center and radius of the circle $ \left(x - 3 \right)^2 + \left( y + 9 \right)^2 = 36 $.	2
2738	Find standard equation of a circle with a center at $ \color{blue}{C = \left( \sqrt{ 6 } , \sqrt{ 5 } \right)} $ and radius $ \color{blue}{ \sqrt{ 7 } }$	2
2739	Find standard equation of a circle with a center at $ \color{blue}{C = \left( \sqrt{ 6 } , \sqrt{ 2 } \right)} $ and radius $ \color{blue}{ \sqrt{ 3 } }$	2
2740	Find standard equation of a circle with a center at $ \color{blue}{C = \left( 5 , 3 \right)} $ and radius $ \color{blue}{ 0 }$	2
2741	Find the center and radius of the circle $ \left( x + 3 \right)^2 + \left( y + 10 \right)^2 = 5 $.	2
2742	Find the center and radius of the circle $ \left( x + 1 \right)^2 + \left( y + 4 \right)^2 = 71 $.	2
2743	Find the center and radius of the circle $ x^2 + y^2 = 0 $.	2
2744	Find the center and radius of the circle $ x^2 + y^2 = 0 $.	2
2745	Find the center and radius of the circle $ x^2 + y^2 = 0 $.	2
2746		2
2747	Find the center and radius of the circle $ x^2 + y^2 = 0 $.	2
2748		2
2749	Find the center and radius of the circle $ \left(x - 4 \right)^2 + \left( y - 3 \right)^2 = 4 $.	2
2750		2