document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=776778>Question 776778</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Dear Math Tutor,\r<BR>\n" );
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document.write( "Two cubes are places next to each other. the length of each of the edges of the larger cube is 4cm. if the ratio of their surface areas is 1:4 calculate: a)the surface area of the small cube. b) the length of the an edge of the small cube\r<BR>\n" );
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document.write( "the ratio part is confusing me. how do i use the ratio to find a)?<BR>\n" );
document.write( "thank you.<BR>\n" );
document.write( "Best wishes,<BR>\n" );
document.write( "Nats\r<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #473727 by </B><A HREF=/tutors/aboutme.mpl?userid=rothauserc><B>rothauserc(4718)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=rothauserc><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=rothauserc><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=473727\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Surface area of a cube = 6*x^2<BR>\n" );
document.write( "Surface area of the larger cube is 6*4^2 = 96 cm^2<BR>\n" );
document.write( "now the ratio of the smaller cube's surface area to the larger cube's surface area is 1/4, we can write<BR>\n" );
document.write( "1/4 = surface area of smaller cube / 96<BR>\n" );
document.write( "cross multiply the two fractions and we ge<BR>\n" );
document.write( "surface area of smaller cube * 4 = 96<BR>\n" );
document.write( "a)surface area of smaller cube = 24 cm^2<BR>\n" );
document.write( "b)24 = 6*n^2<BR>\n" );
document.write( "  4 = n^2<BR>\n" );
document.write( "  n = 2 cm\r<BR>\n" );
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