document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=977351>Question 977351</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A painter needs to cover a triangular region 65 feet by 50 feet by 60 feet.If a can of paint covers 50 square feet. What is the least number of cans that will be needed? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #598872 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39618)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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=598872\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Make a drawn figure:<BR>\n" );
document.write( "65 unit base, one side at the left 60 unit, one side at the right 50 unit;<BR>\n" );
document.write( "angle at left call as alpha.  That is the triangle.\r<BR>\n" );
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document.write( "Law of Cosines:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=60%5E2%2B65%5E2-2%2A60%2A65%2Acos%28alpha%29=50%5E2 ALIGN=MIDDLE  ALT=\"60%5E2%2B65%5E2-2%2A60%2A65%2Acos%28alpha%29=50%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "do the steps...<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=cos%28alpha%29=5325%2F7800 ALIGN=MIDDLE  ALT=\"cos%28alpha%29=5325%2F7800\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=cos%28alpha%29=0.6826923 ALIGN=MIDDLE  ALT=\"cos%28alpha%29=0.6826923\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=alpha=46.94561 ALIGN=MIDDLE  ALT=\"alpha=46.94561\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "You need sine of alpha.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28sin%28alpha%29=0.7307%29 ALIGN=MIDDLE  ALT=\"highlight%28sin%28alpha%29=0.7307%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "AREA, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%281%2F2%29%2Abase%2Aheight ALIGN=MIDDLE  ALT=\"%281%2F2%29%2Abase%2Aheight\"   DISABLED_style= \"max-width:90%; height:auto;\" >;<BR>\n" );
document.write( "You know base but need to calculate height.<BR>\n" );
document.write( "Height, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=60%2Asin%28alpha%29 ALIGN=MIDDLE  ALT=\"60%2Asin%28alpha%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "-<BR>\n" );
document.write( "Now compose area expression in number values:<BR>\n" );
document.write( "Area, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28%2860%2Asin%28alpha%29%2A65%29%2F2%29 ALIGN=MIDDLE  ALT=\"highlight%28%2860%2Asin%28alpha%29%2A65%29%2F2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Area is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%281424.8%2AsquareFeet%29 ALIGN=MIDDLE  ALT=\"highlight%281424.8%2AsquareFeet%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >.\r<BR>\n" );
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document.write( "How Many Paint-Cans Needed?<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%281424.8%2F50=highlight%2828%261%2F2%29%29 ALIGN=MIDDLE  ALT=\"highlight%281424.8%2F50=highlight%2828%261%2F2%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Painter will prepare with 29 whole cans, but would use estimated 28.5 of them; half a can be go unused. </SPAN>\n" );
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