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
3001	Find the center and radius of the circle $ \left( x + \frac{ 327 }{ 10 } \right)^2 + \left( y + \frac{ 227 }{ 25 } \right)^2 = 10 $.	2
3002	Find the center and radius of the circle $ x^2 + y^2 + 8 x -4 y = 0 $.	2
3003	Find standard equation of a circle with a center at $ \color{blue}{C = \left( -2 , 4 \right)} $ passing throught the point $ \color{blue}{ P = \left( -2 , 6 \right) } $.	2
3004	Find the center and radius of the circle $ \left( x + 2 \right)^2 + \left( y - 4 \right)^2 = 9 $.	2
3005		2
3006	Find the center and radius of the circle $ \left( x + 5 \right)^2 + \left( y - 2 \right)^2 = 4 $.	2
3007	Find the center and radius of the circle $ \left(x - 15 \right)^2 + \left( y + 8 \right)^2 = 144 $.	2
3008	Find the center and radius of the circle $ x^2 + y^2 -8 x -4 y + 18 = 0 $.	2
3009	Find standard equation of a circle with a center at $ \color{blue}{C = \left( 2 , 0 \right)} $ and radius $ \color{blue}{ \sqrt{ 5 } }$	2
3010	Find standard equation of a circle with a center at $ \color{blue}{C = \left( -3 , -4 \right)} $ passing throught the point $ \color{blue}{ P = \left( 2 , -7 \right) } $.	2
3011	Find standard equation of a circle with a center at $ \color{blue}{C = \left( 3 , -3 \right)} $ passing throught the point $ \color{blue}{ P = \left( -1 , -2 \right) } $.	2
3012	Find standard equation of a circle with a center at $ \color{blue}{C = \left( -6 , -6 \right)} $ passing throught the point $ \color{blue}{ P = \left( -10 , -4 \right) } $.	2
3013	Find the center and radius of the circle $ \left( x + 14 \right)^2 + \left( y + 12 \right)^2 = 9 $.	2
3014	Find the center and radius of the circle $ x^2 + y^2 -4 x + 6 y + \frac{ 3 }{ 4 } = 0 $.	2
3015	Find the center and radius of the circle $ \left(x - 8 \right)^2 + \left( y - 6 \right)^2 = 13 $.	2
3016	Find the center and radius of the circle $ x^2 + y^2 = 0 $.	2
3017	Find the center and radius of the circle $ x^2 + y^2 = 0 $.	2
3018	Find the center and radius of the circle $ x^2 + y^2 = 0 $.	2
3019	Find the center and radius of the circle $ x^2 + y^2 = 0 $.	2
3020	Find the center and radius of the circle $ x^2 + y^2 = 0 $.	2
3021	Find the center and radius of the circle $ x^2 + y^2 = 0 $.	2
3022	Find the center and radius of the circle $ x^2 + y^2 = 0 $.	2
3023	Find the center and radius of the circle $ x^2 + y^2 = 0 $.	2
3024	Find the center and radius of the circle $ x^2 + y^2 = 0 $.	2
3025	Find the center and radius of the circle $ x^2 + y^2 = 0 $.	2
3026		2
3027		2
3028		2
3029		2
3030	Find the center and radius of the circle $ x^2 + y^2 -6 x + 6 y + 18 = 0 $.	2
3031	Find the center and radius of the circle $ x^2 + y^2 -12 x -10 y -45 = 0 $.	2
3032	Find the center and radius of the circle $ \left(x - 1 \right)^2 + \left( y - 2 \right)^2 = 100 $.	2
3033	Find the center and radius of the circle $ x^2 + y^2 + 18 x -20 y + 117 = 0 $.	2
3034	Find the center and radius of the circle $ \left( x + 3 \right)^2 + \left( y - 5 \right)^2 = 64 $.	2
3035	Find standard equation of a circle with a center at $ \color{blue}{C = \left( 0 , 0 \right)} $ passing throught the point $ \color{blue}{ P = \left( 12 , -1 \right) } $.	2
3036	Find the center and radius of the circle $ x^2 + y^2 + 18 x + 12 y + 68 = 0 $.	2
3037	Find the center and radius of the circle $ x^2 + y^2 -8 y + 5 = 0 $.	2
3038	Find the center and radius of the circle $ \left(x - 4 \right)^2 + \left( y - 7 \right)^2 = 1 $.	2
3039	Find the center and radius of the circle $ \left(x - 1 \right)^2 + \left( y + 3 \right)^2 = 100 $.	2
3040	Find the center and radius of the circle $ \left(x - 3 \right)^2 + \left( y + 1 \right)^2 = 16 $.	2
3041	Find the center and radius of the circle $ \left(x - 2 \right)^2 + \left( y + 1 \right)^2 = 6 $.	2
3042	Find the center and radius of the circle $ \left(x - 1 \right)^2 + \left( y - 1 \right)^2 = 1 $.	2
3043		2
3044		2
3045	Find the center and radius of the circle $ x^2 + \left( y + 6 \right)^2 = 121 $.	2
3046	Find the center and radius of the circle $ x^2 + y^2 -28 x + 2 y + 193 = 0 $.	2
3047	Find the center and radius of the circle $ \left( x + 3 \right)^2 + y^2 = 0 $.	2
3048	Find the center and radius of the circle $ \left(x - 6 \right)^2 + \left( y + 4 \right)^2 = 0 $.	2
3049	Find the center and radius of the circle $ \left( x + 11 \right)^2 + \left( y - 10 \right)^2 = 81 $.	2
3050	Find the center and radius of the circle $ \left(x - 3 \right)^2 + \left( y + 4 \right)^2 = 64 $.	2