Find the equation of the circle with : `Centre (-a, -b) and radius sqrt(a^2 - b^2)`.

Find the equation of the circle with : Centre (-3, 2) and radius 5 .

Find the equation of the circle with : Centre (-3, -2) and radius 7 .

Find the equation of the circle with : Centre (-2, 3) and radius 4 .

Find the equation of the circle with: Centre (a , a) and radius sqrt(2)a .

Find the equation of the circle with : Centre (1, 1) and radius sqrt(2) .

Find the equation of the circle with: Centre (a,a) and radius sqrt(2)a

Find the equation of the circle with Centre at (-3,-2) and radius 6

Find the equation of the circle with Centre at (a,b) and radius sqrt(a^2+b^2)

In each of the following exercise the equation of the circle with Centre (-a,b) and Radius sqrt(a^(2) - b^(2)) .

Find the equation of the circle with centre : (1, 1) and radius sqrt(2)