Pl ! a damaged power plant in japan is closed off for 12 miles in all directions. let's say that point p represents the location of the plant in a cartesian coordinate system. the coordinates of p are (3,5). what is the equation of the circle that surrounds the closed-off region? the equation of a circle in standard form is (x - h)^2 + (y - k)^2 = r^2 where (h, k) is the center of the circle, (x, y) is a point on the circle, and r is the radius.