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Circle F is represented by the equation [tex]\((x+6)^2 + (y+8)^2 = 9\)[/tex]. What is the length of the radius of circle F?

A. 3
B. 9
C. 10
D. 81

Answer :

The equation of circle F is given by

[tex]$$
(x+6)^2 + (y+8)^2 = 9.
$$[/tex]

This is in the standard form of a circle's equation:

[tex]$$
(x-h)^2 + (y-k)^2 = r^2,
$$[/tex]

where [tex]$(h, k)$[/tex] represents the center of the circle and [tex]$r$[/tex] is the radius. From our equation, we have:

[tex]$$
r^2 = 9.
$$[/tex]

To find the radius [tex]$r$[/tex], we take the square root of both sides:

[tex]$$
r = \sqrt{9} = 3.
$$[/tex]

Thus, the length of the radius of circle F is [tex]$\boxed{3}$[/tex].

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