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
2201	Find the center and radius of the circle $ x^2 + y^2 -20 x = 0 $.	2
2202	Find the center and radius of the circle $ x^2 + y^2 -20 x -20 y + 100 = 0 $.	2
2203	Find the center and radius of the circle $ x^2 + y^2 + 20 x -16 y + 128 = 0 $.	2
2204	Find the center and radius of the circle $ \left( x + 1 \right)^2 + \left( y + 3 \right)^2 = 9 $.	2
2205	Find standard equation of a circle with a center at $ \color{blue}{C = \left( 8 , 5 \right)} $ passing throught the point $ \color{blue}{ P = \left( -4 , 21 \right) } $.	2
2206	Find standard equation of a circle with a center at $ \color{blue}{C = \left( -4 , -2 \right)} $ passing throught the point $ \color{blue}{ P = \left( 4 , -17 \right) } $.	2
2207	Find the center and radius of the circle $ \left( x + 6 \right)^2 + \left( y + 4 \right)^2 = 9 $.	2
2208	Find general equation of a circle with a center at $ \color{blue}{C = \left( -3 , -2 \right)} $ and radius $ \color{blue}{ 2 }$	2
2209	Find the center and radius of the circle $ x^2 + y^2 + \frac{ 1 }{ 2 } x + \frac{ 1 }{ 2 } y -4 = 0 $.	2
2210	Find standard equation of a circle with a center at $ \color{blue}{C = \left( -11 , -8 \right)} $ and radius $ \color{blue}{ 2 }$	2
2211	Find the center and radius of the circle $ x^2 + y^2 -2 x -80 = 0 $.	2
2212	Find standard equation of a circle with a center at $ \color{blue}{C = \left( 10 , -4 \right)} $ and radius $ \color{blue}{ 5 }$	2
2213	Find standard equation of a circle with a center at $ \color{blue}{C = \left( -2 , -13 \right)} $ and radius $ \color{blue}{ 2 }$	2
2214	Find the center and radius of the circle $ x^2 + y^2 + 2 x = 0 $.	2
2215	Find standard equation of a circle with a center at $ \color{blue}{C = \left( 6 , 0 \right)} $ and radius $ \color{blue}{ 8 }$	2
2216	Find standard equation of a circle with a center at $ \color{blue}{C = \left( -2 , -2 \right)} $ passing throught the point $ \color{blue}{ P = \left( -\frac{ 5 }{ 4 } , -2 \right) } $.	2
2217	Find standard equation of a circle with a center at $ \color{blue}{C = \left( -\frac{ 93 }{ 10 } , \frac{ 41 }{ 10 } \right)} $ and radius $ \color{blue}{ \sqrt{ 13 } }$	2
2218	Find standard equation of a circle with a center at $ \color{blue}{C = \left( 1 , 1 \right)} $ passing throught the point $ \color{blue}{ P = \left( 6 , -4 \right) } $.	2
2219	Find the center and radius of the circle $ x^2 + y^2 -8 x + 2 y -1 = 0 $.	2
2220	Find the center and radius of the circle $ x^2 + y^2 -8 x -10 y -25 = 0 $.	2
2221	Find the center and radius of the circle $ x^2 + y^2 -3 x -2 y -21 = 0 $.	2
2222	Find the center and radius of the circle $ x^2 + y^2 + 12 x -6 y + 20 = 0 $.	2
2223	Find the center and radius of the circle $ x^2 + y^2 -2 x -10 y -55 = 0 $.	2
2224	Find the center and radius of the circle $ x^2 + y^2 -6 x -4 y -36 = 0 $.	2
2225	Find the center and radius of the circle $ x^2 + y^2 + 10 x -4 y + 20 = 0 $.	2
2226	Find the center and radius of the circle $ x^2 + y^2 -2 x -8 y -8 = 0 $.	2
2227	Find the center and radius of the circle $ x^2 + y^2 + 6 x -\frac{ 2 }{ 3 } y + \frac{ 64 }{ 9 } = 0 $.	2
2228	Find the center and radius of the circle $ \left( x + 2 \right)^2 + \left( y - 5 \right)^2 = 16 $.	2
2229	Find the center and radius of the circle $ x^2 + y^2 -2 x -15 y = 0 $.	2
2230	Find standard equation of a circle with a center at $ \color{blue}{C = \left( -9 , -3 \right)} $ and radius $ \color{blue}{ 4 }$	2
2231	Find standard equation of a circle with a center at $ \color{blue}{C = \left( -2 , -6 \right)} $ passing throught the point $ \color{blue}{ P = \left( -5 , 3 \right) } $.	2
2232	Find standard equation of a circle with a center at $ \color{blue}{C = \left( -7 , -1 \right)} $ and radius $ \color{blue}{ 3 }$	2
2233	Find standard equation of a circle with a center at $ \color{blue}{C = \left( -3 , -1 \right)} $ and radius $ \color{blue}{ 6 }$	2
2234	Find standard equation of a circle with a center at $ \color{blue}{C = \left( -3 , 0 \right)} $ and radius $ \color{blue}{ 6 }$	2
2235	Find standard equation of a circle with a center at $ \color{blue}{C = \left( -4 , -2 \right)} $ and radius $ \color{blue}{ 4 }$	2
2236	Find standard equation of a circle with a center at $ \color{blue}{C = \left( 6 , 1 \right)} $ and radius $ \color{blue}{ 2 }$	2
2237	Find standard equation of a circle with a center at $ \color{blue}{C = \left( -1 , 1 \right)} $ and radius $ \color{blue}{ 7 }$	2
2238	Find standard equation of a circle with a center at $ \color{blue}{C = \left( -1 , 1 \right)} $ and radius $ \color{blue}{ 6 }$	2
2239	Find the center and radius of the circle $ x^2 + y^2 + 26 x -26 y + 311 = 0 $.	2
2240	Find the center and radius of the circle $ x^2 + y^2 + 4 x -28 y + 196 = 0 $.	2
2241	Find the center and radius of the circle $ x^2 + y^2 -16 x + 24 y + 172 = 0 $.	2
2242	Find the center and radius of the circle $ x^2 + y^2 -32 x + 30 y + 475 = 0 $.	2
2243	Find the center and radius of the circle $ x^2 + y^2 -12 x -26 y + 201 = 0 $.	2
2244	Find the center and radius of the circle $ x^2 + y^2 -14 x + 28 y -232 = 0 $.	2
2245	Find the center and radius of the circle $ x^2 + y^2 = 0 $.	2
2246	Find the center and radius of the circle $ x^2 + y^2 + 6 x +y +1 = 0 $.	2
2247	Find the center and radius of the circle $ x^2 + y^2 -12 x -6 y -55 = 0 $.	2
2248	Find the center and radius of the circle $ \left(x - 1 \right)^2 + \left( y + 6 \right)^2 = 49 $.	2
2249	Find standard equation of a circle with a center at $ \color{blue}{C = \left( -4 , 2 \right)} $ and radius $ \color{blue}{ 2 }$	2
2250		2