SOLUTION: In the figure above, the circle has center Y and the four shaded semicircles each have area 18π. What is the circumference of the circle?
image: http://152.46.13.240/MoodleCo
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Question 913729: In the figure above, the circle has center Y and the four shaded semicircles each have area 18π. What is the circumference of the circle?
image: http://152.46.13.240/MoodleContent/SATprep/Math%20Unit%207/Lesson%203%20Assignment/cb4.gif
Answer by KMST(5328) (Show Source): You can put this solution on YOUR website!
= radius of the small semicircles; = radius of the ;arge circle.
= total area of the 4 semi-circles.
= total area of the 4 semi-circles.
--->--->
So,
Circumference of the circle =
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