document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=169966>Question 169966</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0321233832/algebrahomeworkh>elementary and Intermediate algebra concepts and application</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> please help me I need help bad can't understand this book thank you\r<BR>\n" );
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document.write( "A function gives the value of C as 2x(22/7) xr. Find C when r= 21cm </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #125429 by </B><A HREF=/tutors/aboutme.mpl?userid=solver91311><B>solver91311(24713)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=solver91311><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=solver91311><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=125429\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> I think that you are using 'x' as a multiplication sign, so your function is:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=C=2%2822%2F7%29r ALIGN=MIDDLE  ALT=\"C=2%2822%2F7%29r\"   DISABLED_style= \"max-width:90%; height:auto;\" >  and you want the value of C when r = 21 cm.\r<BR>\n" );
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document.write( "Just substitute the value 21 for r in the function and do the arithmetic.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=C=2%2822%2F7%2921 ALIGN=MIDDLE  ALT=\"C=2%2822%2F7%2921\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "I'll leave the arithmetic to you. </SPAN>\n" );
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