\[\boxed{\mathbf{966.ОК\ ГДЗ - домашка\ на}\ 5}\]
\[\textbf{а)}\ A(0;5);\ r = 3:\]
\[x^{2} + (y - 5)^{2} = 9.\]
\[\textbf{б)}\ A( - 1;2);\ r = 2:\]
\[{(x + 1)}^{2} + (y - 2)^{2} = 4.\]
\[\textbf{в)}\ A( - 3; - 7);\ r = \frac{1}{2}:\]
\[{(x + 3)}^{2} + (y + 7)^{2} = \frac{1}{4}.\]
\[\textbf{г)}\ A(4; - 3);\ r = 10:\]
\[{(x - 4)}^{2} + (y + 3)^{2} = 100.\]