Question

Find the equation of a circle whose center is (-2, -5) and radius is 4

Answer 1

The standard equation for any circle with
its center at (a,b) and a radius of 'r' is . . .

         (x - a)² + (y - b)²  =  r²

For the circle in the question . . .

         (x + 2)² + (y + 5)²  =  16.