document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=156885>Question 156885</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 18.When blown up, a beach ball has a diameter of 1 foot. How much air is needed to blow up the beach ball? The volume of a sphere is V = 4/3 &#960; r3, where r is the radius (the radius is ½ of the diameter). Leave your answer in terms of &#960;. Give your answer in cubic feet.<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #115663 by </B><A HREF=/tutors/aboutme.mpl?userid=nerdybill><B>nerdybill(7384)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=nerdybill><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=nerdybill><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=115663\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> As you know,<BR>\n" );
document.write( "radius = diameter/2<BR>\n" );
document.write( "AND, since the problem stated that the diameter is 1 ft:<BR>\n" );
document.write( "radius = 1/2 ft<BR>\n" );
document.write( ".<BR>\n" );
document.write( "Plug it into:<BR>\n" );
document.write( "V = 4/3 &#960; r^3<BR>\n" );
document.write( "V = 4/3 &#960; (1/2)^3<BR>\n" );
document.write( "V = 4/3 &#960; (1/8)<BR>\n" );
document.write( "V = 1/3 &#960; (1/2)<BR>\n" );
document.write( "V = 1/6 &#960; <BR>\n" );
document.write( "V = &#960;/6  \r<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );