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OpenStudy (anonymous):
AB is a line 48 cm in length and C is its midpoint. On AB, AC, CB semicircles are described. Determine the radius of the circle inscribed in the space enclosed by three semi-circles.
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OpenStudy (anonymous):
|dw:1317302538535:dw| |dw:1317302733724:dw| Now use the sine rule to give (12+r)/sin 30 =24/sin120 ........ r=\[8\sqrt{3}-12\] I think
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