document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1203678>Question 1203678</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 2. A stone is dropped into a liquid forming circles which increase in radius with time according to the formula r(t) = 4t The area of a circle related to radius is A(r) = pi * r ^ 2 Using composition of functions, find an equation that would give area as a function time . </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #839429 by </B><A HREF=/tutors/aboutme.mpl?userid=greenestamps><B>greenestamps(13200)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=greenestamps><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=greenestamps><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=839429\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <br><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=r%28t%29+=+4t ALIGN=MIDDLE  ALT=\"r%28t%29+=+4t\"   DISABLED_style= \"max-width:90%; height:auto;\" ><br><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A%28r%29+=+%28pi%29%28r%5E2%29 ALIGN=MIDDLE  ALT=\"A%28r%29+=+%28pi%29%28r%5E2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A%28t%29+=+%28pi%29%28r%28t%29%29%5E2+=+%28pi%29%28%284t%29%5E2%29+=+16%28pi%29t%5E2 ALIGN=MIDDLE  ALT=\"A%28t%29+=+%28pi%29%28r%28t%29%29%5E2+=+%28pi%29%28%284t%29%5E2%29+=+16%28pi%29t%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><br><BR>\n" );
document.write( "ANSWER: <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A%28t%29=16%28pi%29t%5E2 ALIGN=MIDDLE  ALT=\"A%28t%29=16%28pi%29t%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><br> </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );