document.write( "Question 129027: If a radius of a circle is tripled, then the area is: \n" ); document.write( "
Algebra.Com's Answer #94332 by checkley71(8403)\"\" \"About 
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area=pi*r^2
\n" ); document.write( "if the radius is tripled then:
\n" ); document.write( "area=pi*(2r)^2
\n" ); document.write( "area=pi*4r^2 or the area is increased by 4.
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