SOLUTION: In the diagram to the bottom, AB is the diameter of the large circle. The smaller circles both have their centers on AB, and both are tangent to each other and to the large circle.
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Question 1148129: In the diagram to the bottom, AB is the diameter of the large circle. The smaller circles both have their centers on AB, and both are tangent to each other and to the large circle. If AC is 4/5 the length of AB, what fraction of the diagram is shaded?
Diagram: https://imgur.com/a/3y6lLDN Answer by ikleyn(52847) (Show Source):
