document.write( "Question 1178370: given are two centric circles with outer circle having a radius of 10cm. if the area of the inner circle is half of the outer circle, find the border between two circles. \n" ); document.write( "

Algebra.Com's Answer #807595 by ewatrrr(24785) $\"\"$ $\"About$

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document.write( "Hi
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document.write( "two concentric circles with outer circle having a radius of \"10cm.\"
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document.write( "Let r be the radius of the smaller inner circle:
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document.write( "Question States:
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document.write( "πr^2 = (1/2)π(10cm)^2
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document.write( " r^2 = 50
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document.write( "  r =  √50 = 5√2
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document.write( "the border between the two concentric circles circles:
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document.write( " a circle with r =  5√2cm
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document.write( "Wish You the Best in your Studies
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