I don't either it is quite hard to be fair
Answer:
2 units
Step-by-step explanation:
The given equation of the circle is:

The general equation of the circle is:

Comparing the given equation with the general equation we can say:
g = 4
f = -3
c = 21
The formula for radius of the circle is:

Using these values of the given circle, we get:

Therefore, the length of radius of the given circle is 2.
Answer:
d
Step-by-step explanation:
No its sss because you have no given angles only sides
Answer:
(1,-1)
Step-by-step explanation: