1. **State the problem:** We have three circles A, B, and C with diameters 10, 30, and 10 units respectively. Given that $AZ = CW$ and $YW = 3$, we need to find the lengths of segments $AZ$, $XB$, and $AC$.
2. **Identify known values:**
- Diameter of circle A: 10 units, so radius $r_A = \frac{10}{2} = 5$
- Diameter of circle B: 30 units, so radius $r_B = \frac{30}{2} = 15$
- Diameter of circle C: 10 units, so radius $r_C = \frac{10}{2} = 5$
- $YW = 3$
- $AZ = CW$
3. **Analyze the geometry:**
Since $AZ = CW$ and circles A and C have the same radius, the segments $AZ$ and $CW$ are equal chords or segments related to these circles.
4. **Find $AZ$ and $CW$:**
Given $YW = 3$, and assuming $YW$ is a segment between points on circles B and C, and $AZ = CW$, we can infer that $AZ = CW = YW = 3$ units.
5. **Find $XB$:**
Assuming $X$ and $B$ are points on circle B, and $XB$ is a radius or segment related to circle B, the length $XB$ equals the radius of circle B, which is 15 units.
6. **Find $AC$:**
$AC$ is the distance between centers of circles A and C. Since both have radius 5 and are positioned such that $AZ = CW = 3$, and considering the geometry of overlapping circles, the distance $AC$ equals the sum of their radii minus the overlap.
Since $AZ = CW = 3$, the overlap is 3 units, so:
$$AC = r_A + r_C - AZ = 5 + 5 - 3 = 7$$
**Final answers:**
- $AZ = 3$
- $XB = 15$
- $AC = 7$
Circle Segments 90442C
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