Which is the equation of a 20 cm diameter circle with its center at (3, -6)?
(x+3)^2+(y-6)^2=100
(x-3)^2+(y+6)^2=400
(x-3)^2+(y+6)^2=100 <my choice
(x+3)^2+(y-6)^2=400
(x+3)^2+(y-6)^2=100
(x-3)^2+(y+6)^2=400
(x-3)^2+(y+6)^2=100 <my choice
(x+3)^2+(y-6)^2=400