document.write( "Question 343361: The area of a circle with a radius of 2 is how much less than the area of a circle with radius 4?\r
\n" ); document.write( "\n" ); document.write( "(a)2π (b) 4π (c) 8π (d) 12π (e) 16π
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Algebra.Com's Answer #245698 by nyc_function(2741)\"\" \"About 
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We use A = pir^2 TWICE.\r
\n" ); document.write( "\n" ); document.write( "Area of big circle - area of litle circle\r
\n" ); document.write( "\n" ); document.write( "16pi - 4pi = 12pi\r
\n" ); document.write( "\n" ); document.write( "The answer is choice (d).\r
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