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
1901	Find the center and radius of the circle $ x^2+y^2 + 1 x -1 y -\frac{ 7 }{ 2 } = 0 $.	2
1902	Find Standard equation of a circle with a center at $ \color{blue}{C = \left( -4 , -6 \right)} $ passing throught the point $ \color{blue}{ P = \left( -1 , -4 \right) } $.	2
1903	Find the center and radius of the circle $ x^2+y^2 + 6 x + 4 y -36 = 0 $.	2
1904	Find the center and radius of the circle $ x^2+y^2 + 16 x + 4 y + 43 = 0 $.	2
1905	Find the center and radius of the circle $ x^2+y^2 -6 x + 4 y -23 = 0 $.	2
1906	Find the center and radius of the circle $ x^2+y^2 -12 x + 2 y -12 = 0 $.	2
1907	Find the center and radius of the circle $ (x+2)^2+(y+2)^2=3 $.	2
1908	Find the center and radius of the circle $ (x+2)^2+(y-2)^2=3 $.	2
1909	Find the center and radius of the circle $ (x+14)^2+(y-21)^2=4 $.	2
1910	Find the center and radius of the circle $ (x+7)^2+(y-108)^2=0 $.	2
1911	Find the center and radius of the circle $ x^2+y^2 + 2 x + 16 y + 1 = 0 $.	2
1912	Find the center and radius of the circle $ (x+2)^2+(y+6)^2=81 $.	2
1913	Find the center and radius of the circle $ (x+6)^2+(y+14)^2=400 $.	2
1914	Find the center and radius of the circle $ x^2+y^2 + 12 x + 4 y + 15 = 0 $.	2
1915	Find the center and radius of the circle $ (x-4)^2+(y+9)^2=289 $.	2
1916	Find the center and radius of the circle $ x^2+y^2 -12 x + 14 y + 21 = 0 $.	2
1917	Find Standard equation of a circle with a center at $ \color{blue}{C = \left( -9 , 6 \right)} $ passing throught the point $ \color{blue}{ P = \left( -5 , 2 \right) } $.	2
1918	Find the center and radius of the circle $ (x-5)^2+(y-6)^2=0 $.	2
1919	Find the center and radius of the circle $ x^2+y^2 -6 x -4 y + 9 = 0 $.	2
1920	Find the center and radius of the circle $ (x-4)^2+(y+5)^2=4 $.	2
1921	Find the center and radius of the circle $ (x+8)^2+(y-3)^2=64 $.	2
1922	Find the center and radius of the circle $ (x-8)^2+(y+13)^2=361 $.	2
1923	Find Standard equation of a circle with a center at $ \color{blue}{C = \left( -2 , -7 \right)} $ and radius $ \color{blue}{ 8 }$	2
1924	Find the center and radius of the circle $ (x-10)^2+(y+10)^2=14 $.	2
1925	Find the center and radius of the circle $ (x+2)^2+(y-4)^2=25 $.	2
1926	Find Standard equation of a circle with a center at $ \color{blue}{C = \left( -4 , 5 \right)} $ and radius $ \color{blue}{ 2 }$	2
1927	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( 1 , -10 \right) } $.	2
1928	Find the center and radius of the circle $ (x-4)^2+(y+1)^2=9 $.	2
1929	Find the center and radius of the circle $ x^2+y^2 + 2 x -6 y + 6 = 0 $.	2
1930	Find Standard equation of a circle with a center at $ \color{blue}{C = \left( -5 , 7 \right)} $ and radius $ \color{blue}{ 6 }$	2
1931	Find Standard equation of a circle with a center at $ \color{blue}{C = \left( 5 , 1 \right)} $ passing throught the point $ \color{blue}{ P = \left( 0 , -3 \right) } $.	2
1932	Find the center and radius of the circle $ (x+5)^2+(y-6)^2=121 $.	2
1933	Find the center and radius of the circle $ (x-3)^2+(y+9)^2=36 $.	2
1934	Find the center and radius of the circle $ (x+1)^2+y^2=12 $.	2
1935	Find the center and radius of the circle $ x^2+y^2 -4 x + 10 y -52 = 0 $.	2
1936	Find the center and radius of the circle $ x^2+y^2 + 26 x + 28 y + 364 = 0 $.	2
1937	Find the center and radius of the circle $ x^2+y^2 + 24 x + 10 y + 160 = 0 $.	2
1938	Find the center and radius of the circle $ x^2+y^2 + 6 x + 32 y -264 = 0 $.	2
1939	Find the center and radius of the circle $ (x+\frac{5}{2})^2+(y-3.742)^2=9 $.	2
1940	Find Standard equation of a circle with a center at $ \color{blue}{C = \left( -8 , 8 \right)} $ and radius $ \color{blue}{ 19 }$	2
1941	Find Standard equation of a circle with a center at $ \color{blue}{C = \left( -3 , 9 \right)} $ and radius $ \color{blue}{ 18 }$	2
1942	Find the center and radius of the circle $ x^2+y^2 -8 x + 10 y -32 = 0 $.	2
1943	Find the center and radius of the circle $ (x+15)^2+(y+12)^2=0 $.	2
1944	Find the center and radius of the circle $ x^2+y^2 -12 x + 20 y + 0 = 0 $.	2
1945	Find the center and radius of the circle $ (x+3)^2+(y+11)^2=196 $.	2
1946	Find the center and radius of the circle $ (x-3)^2+(y+2)^2=36 $.	2
1947	Find the center and radius of the circle $ (x-5)^2+(y-3)^2=64 $.	2
1948	Find the center and radius of the circle $ (x+1)^2+(y+2)^2=4 $.	2
1949	Find the center and radius of the circle $ (x-2)^2+(y-1)^2=9 $.	2
1950	Find the center and radius of the circle $ x^2+y^2 + 16 x + 6 y + 24 = 0 $.	2