document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=385272>Question 385272</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The cost of a pizza varies directly with the square of its radius. If the cost of the pizza is $8.00 when the radius is 8 inches, find the cost when the radius increases to 10 inches. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #272605 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=272605\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The cost of a pizza varies directly with the square of its radius. If the cost of the pizza is $8.00 when the radius is 8 inches, find the cost when the radius increases to 10 inches.<BR>\n" );
document.write( "...<BR>\n" );
document.write( "Cost c proportional to r^2<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=c%28alpha%29r%5E2 ALIGN=MIDDLE  ALT=\"c%28alpha%29r%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "...<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=c=kr%5E2 ALIGN=MIDDLE  ALT=\"c=kr%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" > where k is  the constant of proportionality<BR>\n" );
document.write( "r=8 c =8<BR>\n" );
document.write( "plug these values<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=8=k%2A8%5E2 ALIGN=MIDDLE  ALT=\"8=k%2A8%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "divide both sides by 8^2<BR>\n" );
document.write( "...<BR>\n" );
document.write( "k=8/8^2<BR>\n" );
document.write( "k=1/8<BR>\n" );
document.write( "...<BR>\n" );
document.write( "k=1/8 r=10<BR>\n" );
document.write( "c=kr^2<BR>\n" );
document.write( "c=1/8*10^2<BR>\n" );
document.write( "c=100/8<BR>\n" );
document.write( "c=$ 12.50<BR>\n" );
document.write( "...<BR>\n" );
document.write( "m.ananth@hotmail.ca </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );