Answer:
D
Step-by-step explanation:
Make the 3 into a fraction and then flip it to cancel out which makes it easier then do it to the -2,197 for you to get x
Easy
the radius is the distance from the center to a point on the circle
we are given
center=(7,1)
a point=(8,7)
find the distance
distance formula
D=

so the distance between point and center is radius
D=

D=

D=

D=√37 units
radius is √37 units
Two out of thirty nine hope this helped