document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=185749>Question 185749</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0618250220/algebrahomeworkh>Geometry</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> Find the circumference of the circle whose equation is given. (x+1)+ (y-5)squared =4 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #139302 by </B><A HREF=/tutors/aboutme.mpl?userid=feliz1965><B>feliz1965(151)</B></A><img src=\"/images/stars/stars-09.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=feliz1965><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=139302\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Circle whose center is at (h,k)<BR>\n" );
document.write( "(Called the \"center-radius form\")\r<BR>\n" );
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document.write( "(x - h)^2 + (y - k)^2 = r^2\r<BR>\n" );
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document.write( "You were given (x+1) + (y-5)^2 = 4....Are you sure the first quantity is not squared?\r<BR>\n" );
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document.write( "If we take the square root of 4, we get our radius to be 2.\r<BR>\n" );
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document.write( "To find the circumference of a circle, we use the formula C = pid, where C = circumference and d = diameter.\r<BR>\n" );
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document.write( "Well, it takes two radii to make 1 diameter.\r<BR>\n" );
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document.write( "Our diameter is found by using d = 2r.\r<BR>\n" );
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document.write( "I found the radius to be 2.\r<BR>\n" );
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document.write( "Before we can apply the circumference formula, we must find the diameter.\r<BR>\n" );
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document.write( "So, d = 2(2) = 4.\r<BR>\n" );
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document.write( "C = pi(4), where pi = 3.14\r<BR>\n" );
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document.write( "C = (3.14)(4)\r<BR>\n" );
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document.write( "Can you finish now?  Simply multiply to find C.\r<BR>\n" );
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document.write( " </SPAN>\n" );
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