We are given a circle with center A. We are given that $BE = 34$ and $CD = 26$. We need to find the length of $AF$. We know that $AF$ is perpendicular to $CD$.

GeometryCirclesChordsPythagorean Theorem
2025/4/29

1. Problem Description

We are given a circle with center A. We are given that BE=34BE = 34 and CD=26CD = 26. We need to find the length of AFAF. We know that AFAF is perpendicular to CDCD.

2. Solution Steps

First, we can find the radius of the circle. Since BEBE is a chord that passes through the center AA, it is a diameter. Thus, the radius rr is half of BEBE, so r=BE/2=34/2=17r = BE/2 = 34/2 = 17.
Since AFAF is perpendicular to the chord CDCD, it bisects the chord CDCD. Therefore, CF=CD/2=26/2=13CF = CD/2 = 26/2 = 13.
Now, we can consider the right triangle ACFACF. We have AC=r=17AC = r = 17 and CF=13CF = 13. We want to find AFAF. Using the Pythagorean theorem, we have:
AC2=AF2+CF2AC^2 = AF^2 + CF^2
172=AF2+13217^2 = AF^2 + 13^2
289=AF2+169289 = AF^2 + 169
AF2=289169AF^2 = 289 - 169
AF2=120AF^2 = 120
AF=120AF = \sqrt{120}
Now, we can approximate the value of 120\sqrt{120} to the nearest hundredth:
AF=12010.9544510.95AF = \sqrt{120} \approx 10.95445 \approx 10.95

3. Final Answer

AF=10.95AF = 10.95

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