document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=620628>Question 620628</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Scientists are drilling a hole in the ocean floor to learn more about the Earth’s history. Currently, the hole is in the shape of a cylinder whose volume is approximately 4200 cubic feet and whose height is 4.1 miles. Find the radius of the hole to the nearest hundredth of a foot. (Hint: Make sure the same unit of measurement are used.) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #390295 by </B><A HREF=/tutors/aboutme.mpl?userid=unlockmath><B>unlockmath(1688)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=unlockmath><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=unlockmath><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=390295\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Hello, <BR>\n" );
document.write( "The formula to use is:<BR>\n" );
document.write( "V=pi(r)^2h<BR>\n" );
document.write( "Convert 4.1 miles to feet by multiplying it by 5280 to get:<BR>\n" );
document.write( "21648 feet<BR>\n" );
document.write( "Plug in the values:<BR>\n" );
document.write( "4200 cubic feet=3.14r^2(21648)<BR>\n" );
document.write( "Expand this out:<BR>\n" );
document.write( "4200 cubic feet=r^2(67974.72)<BR>\n" );
document.write( "Divide 67974.72 feet<BR>\n" );
document.write( ".0618 square feet=r^2<BR>\n" );
document.write( "Square root both sides to get:<BR>\n" );
document.write( ".25 feet (approx) or 3 inches radius.<BR>\n" );
document.write( "Make sense?<BR>\n" );
document.write( "RJ<BR>\n" );
document.write( "www.math-unlock.com<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );