1. **Stating the problem:**
Find the equation of a circle with center at $(5, -2)$ and radius $4$ cm.
2. **Formula for the equation of a circle:**
The general equation of a circle with center $(h, k)$ and radius $r$ is:
$$ (x - h)^2 + (y - k)^2 = r^2 $$
3. **Substitute the given values:**
Here, $h = 5$, $k = -2$, and $r = 4$.
4. **Write the equation:**
$$ (x - 5)^2 + (y - (-2))^2 = 4^2 $$
5. **Simplify:**
$$ (x - 5)^2 + (y + 2)^2 = 16 $$
6. **Final answer:**
The equation of the circle is:
$$ (x - 5)^2 + (y + 2)^2 = 16 $$
This equation represents all points $(x, y)$ that are exactly 4 units away from the center $(5, -2)$.
Circle Equation C961F1
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