Boone Ellis
05/05/2023 · Senior High School
Find the center and radius of the circle. \[ (x-3)^{2}+(y+5)^{2}=16 \] The center of the circle is \( (3,-5) \) (Type an ordered pair.) The radius is
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Step-by-step Solution
The equation of the circle is given by
\[
(x-3)^{2}+(y+5)^{2}=16.
\]
In the standard form of a circle's equation, \((x-h)^{2}+(y-k)^{2}=r^{2}\), the center of the circle is \((h, k)\) and the radius is \(r\).
From the given equation:
- The center \((h, k)\) can be identified as \((3, -5)\).
- The right side of the equation, \(16\), represents \(r^{2}\).
To find the radius \(r\), we take the square root of \(16\):
\[
r = \sqrt{16} = 4.
\]
Thus, the center of the circle is \((3, -5)\) and the radius is \(4\).
In summary:
- The center of the circle is \((3, -5)\).
- The radius is \(4\).
Quick Answer
The center of the circle is \((3, -5)\) and the radius is \(4\).
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