Question

Find the standard equation of the circle having the given center and radius. Center (3,-7), radius 1/5

Answer 1

hello : 
The standard equation of a circle with center (h, k) and radius : r  is (x - h)² + (y - k)² = r².
h= 3  and  k= -7   r=1/5
(x-3)² +(y+7)² = 1/25