Question 1154620: 15.
https://answers.yahoo.com/question/index?qid=20200327181512AAicHzZ
Answer by greenestamps(13200)   (Show Source):
You can put this solution on YOUR website!
Technically, the question can't be answered, because we are not told that the segment of length 10 is a diameter....
Assuming it is, the radius of the circle is 5, so the area of the whole circle is 25pi.
The given angle is 72 degrees, so the central angle of the shaded region is 180-72 = 108 degrees.
The area of the shaded region is then 108/360 of the area of the whole circle.
Use a calculator and express the answer in the required form.
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