document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1170405>Question 1170405</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A circular driveway is bounded by two circles. The equation of the large circle is x^2 + y^2 = 4225, while<BR>\n" );
document.write( "the smaller circle is x^2 + y^2 = 1444. What is the difference between the area of the larger circle and the<BR>\n" );
document.write( "smaller circle? </SPAN>\n" );
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document.write( "Since the equation of a circle is x^2+y^2 = r^2, the 4225 and 1444 are the squares of the radii of the two circles.<br><BR>\n" );
document.write( "The area of each circle is pi times radius squared; so the difference in the areas of the two circles is<br><BR>\n" );
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