Chang Pope
09/06/2024 · Elementary School
Write an equation of the circle with center \( (5,-3) \) and diameter 8.
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Step-by-step Solution
To write the equation of a circle, we can use the standard form of the equation of a circle, which is given by:
\[
(x - h)^2 + (y - k)^2 = r^2
\]
where \((h, k)\) is the center of the circle and \(r\) is the radius.
Given the center of the circle \((5, -3)\) and a diameter of 8, we first need to find the radius. The radius \(r\) is half of the diameter:
\[
r = \frac{8}{2} = 4
\]
Now we can substitute the center \((h, k) = (5, -3)\) and the radius \(r = 4\) into the equation:
\[
(x - 5)^2 + (y + 3)^2 = 4^2
\]
Calculating \(4^2\):
\[
4^2 = 16
\]
Thus, the equation of the circle is:
\[
(x - 5)^2 + (y + 3)^2 = 16
\]
This is the equation of the circle with center \((5, -3)\) and diameter 8.
Quick Answer
The equation of the circle is \((x - 5)^2 + (y + 3)^2 = 16\).
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