Find the equation of the circle with centre
C and redius r where.
`C= (0,0), r= 9`

Find the equation of the circle with centre C and redius r where. C=(-7,-3), r=4

Find the equation of the circle with centre C and redius r where. C = (-1, 2),r=5

Find the equation of the circle with centre C and redius r where. C =(2,-3),r=4

Find the equation of the circle with centre C and redius r where. C= (1,7) , r =5/2

Find the equation of the circle with centre C and redius r where. C=(-1/2,-9),r=5

Find the equation of the circle with centre C and redius r where. C = (a,-b),r=a+b

Find the equation of the circle with centre C and radius r where C = (-7, -3) , r= 4

Find the equation of the circle with centre C and radius r where C = (a,-b) , r= a+b

Find the equation of the circle with centre C and radius r where C = (-a,-b) , r = sqrt(a^(2) -b^(2)) (|a||gt|b|)