document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=258478>Question 258478</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Blood flow is partially controlled by the cross-sectional area of the blood vessel through which the blood is traveling. Blood vessel B has a radius of 1 times 10&#8722;4mm and blood vessel D has a radius of 5 times 10&#8722;5mm. Let r1 be the radius of B and r2 be the radius of D. Find the ratio of r1 to r2. What does the ratio tell you? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #190282 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=190282\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Blood flow is partially controlled by the cross-sectional area of the blood vessel through which the blood is traveling. Blood vessel B has a radius of 1 times 10&#8722;4mm and blood vessel D has a radius of 5 times 10&#8722;5mm. Let r1 be the radius of B and r2 be the radius of D. Find the ratio of r1 to r2. What does the ratio tell you?<BR>\n" );
document.write( "------<BR>\n" );
document.write( "r1:r2 = r1/r2 = (1x10^(-4))/(5x10^-5)<BR>\n" );
document.write( "= (1/5)x10<BR>\n" );
document.write( "= 0.2x10<BR>\n" );
document.write( "= 2<BR>\n" );
document.write( "---------------<BR>\n" );
document.write( "r1:r2 = 2:1<BR>\n" );
document.write( "----------------<BR>\n" );
document.write( "r1 is twice the radius of r2<BR>\n" );
document.write( "===============================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );