document.write( "Question 282358: If the radius of a circle is increased by 100%, then the area is increased by:\r
\n" );
document.write( "\n" );
document.write( "(A)100% (B) 200% (C) 300% (D) 400% (E) none of these
\n" );
document.write( " \n" );
document.write( "
Algebra.Com's Answer #205009 by checkley77(12844)![]() ![]() ![]() You can put this solution on YOUR website! Area=piR^2 \n" ); document.write( "Area=pi(2R)^2 \n" ); document.write( "Area=pi(4R^2) \n" ); document.write( "Area=pi(4)R^2 Thus the area is increased by a factor of 4 or 400%. \n" ); document.write( "Answer(D) 400%. \n" ); document.write( " |