2 answers:
Answer:
r = 

Is this a live test question or a homework question?
Step-by-step explanation:
the radius is the distance between (3, 2) and (5, -2)
= 
= 
= 4 + 16 = 20
r = 
Equation of circle: 
Answer:
Radius: 
Equation of circle: 
Step-by-step explanation:
The radius of a circle is equal to the distance between the center of the circle and any point on the circle. Therefore, we have:

The equation of a circle with radius
and center
is given by:
.
What we know:
- radius of
- center at
Substituting known values, we get:

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