document.write( "Question 776951: If the radius of a circle is r cm, what is the area of the circle? If the radius is increased to 2r cm, what is the area of the circle? \n" ); document.write( "
Algebra.Com's Answer #473823 by Cromlix(4381)\"\" \"About 
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If the radius of a circle is 'r'
\n" ); document.write( "The area = Pi * r^2
\n" ); document.write( "If the radius is increased to '2r'
\n" ); document.write( "The area = Pi*4r^2.
\n" ); document.write( "Hope this helps.
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