document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=332758>Question 332758</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The number of centimeters in the perimeter of a semicircle is numerically the<BR>\n" );
document.write( "same as the number of square centimeters in its area. What is the number of<BR>\n" );
document.write( "centimeters in the radius of the semicircle? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #238475 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=238475\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The number of centimeters in the perimeter of a semicircle is numerically the<BR>\n" );
document.write( "same as the number of square centimeters in its area.<BR>\n" );
document.write( " What is the number of centimeters in the radius of the semicircle?<BR>\n" );
document.write( ":<BR>\n" );
document.write( "Let r = the radius<BR>\n" );
document.write( "Half the circumference = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=pi%2Ar ALIGN=MIDDLE  ALT=\"pi%2Ar\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( ":<BR>\n" );
document.write( "Circumference of a semi-circle = area of the semicircle<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28pi%2Ar%29%2B+2r ALIGN=MIDDLE  ALT=\"%28pi%2Ar%29%2B+2r\"   DISABLED_style= \"max-width:90%; height:auto;\" > = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=.5%2Api%2Ar%5E2 ALIGN=MIDDLE  ALT=\".5%2Api%2Ar%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "factor out r<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=r%28pi%2B2%29 ALIGN=MIDDLE  ALT=\"r%28pi%2B2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=.5%2Api%2Ar%5E2 ALIGN=MIDDLE  ALT=\".5%2Api%2Ar%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Divide both sides by r<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=pi%2B2 ALIGN=MIDDLE  ALT=\"pi%2B2\"   DISABLED_style= \"max-width:90%; height:auto;\" > = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=.5%2Api%2Ar ALIGN=MIDDLE  ALT=\".5%2Api%2Ar\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Use 3.1416 for pi<BR>\n" );
document.write( "3.1416 + 2 = .5*3.1416*r<BR>\n" );
document.write( "5.1416 = 1.5708r<BR>\n" );
document.write( "r = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=5.1416%2F1.5708 ALIGN=MIDDLE  ALT=\"5.1416%2F1.5708\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "r = 3.273 cm is the radius<BR>\n" );
document.write( ":<BR>\n" );
document.write( ":<BR>\n" );
document.write( "Check this:<BR>\n" );
document.write( " find the area of the semi circle<BR>\n" );
document.write( "A = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=.5%2Api%2A3.273%5E2 ALIGN=MIDDLE  ALT=\".5%2Api%2A3.273%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "A = 16.827<BR>\n" );
document.write( ":<BR>\n" );
document.write( "Find the circum of the semi circle<BR>\n" );
document.write( "C = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28pi%2A3.273%29%2B2%282.373%29 ALIGN=MIDDLE  ALT=\"%28pi%2A3.273%29%2B2%282.373%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "C = 16.828, close enough </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );