document.write( "Question 1115207: Find the radius of a circle which has a sector area of 9 pi whose central angle is 90 degrees. \n" ); document.write( "
Algebra.Com's Answer #730149 by stanbon(75887)\"\" \"About 
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Find the radius of a circle which has a sector area of 9 pi whose central angle is 90 degrees.
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\n" ); document.write( "A 90 deg sector has 1/4 the area of the circle.
\n" ); document.write( "Total circle area = 4*9pi = 36pi
\n" ); document.write( "Equation:
\n" ); document.write( "pi*r^2 = 36pi
\n" ); document.write( "radius = 6
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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