document.write( "Question 1098104: What is the circumference of the largest circle that can be inscribed in a semicircular region of radius r? \n" ); document.write( "
Algebra.Com's Answer #712504 by t0hierry(194)\"\" \"About 
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it will be a circle of radius r/4 so its diameter can be less or equal to r.
\n" ); document.write( "It's circumference is 2 pi r/4 = pi r/2
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