%% This document created by Scientific Notebook (R) Version 3.0


\documentclass[12pt,thmsa]{article}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\usepackage{sw20jart}

%TCIDATA{TCIstyle=article/art4.lat,jart,sw20jart}

%TCIDATA{<META NAME="ViewSettings" CONTENT="23">}
%TCIDATA{<META NAME="GraphicsSave" CONTENT="32">}
%TCIDATA{<META NAME="Title" CONTENT="Reference/Mathematics/Circle">}
%TCIDATA{Created=Mon Aug 19 14:52:24 1996}
%TCIDATA{LastRevised=Mon Feb 10 14:49:13 1997}
%TCIDATA{Language=American English}
%TCIDATA{CSTFile=Reference.cst}
%TCIDATA{PageSetup=72,72,72,72,0}
%TCIDATA{<LINK REL="contents" HREF="..\..\Reference\ReferenceIndex.tex#Reference Index">}
%TCIDATA{<LINK REL="next" HREF="GE01_06.tex">}
%TCIDATA{<LINK REL="parent" HREF="GE_contents.tex">}
%TCIDATA{<LINK REL="previous" HREF="GE01_04.tex">}
%TCIDATA{MapleDefs=
%$d=r\cos \frac{\theta }{2} $
%}

%TCIDATA{AllPages=
%F=36,\PARA{038<p type="texpara" tag="Body Text" >\hfill \thepage}
%}


\input{tcilatex}
\begin{document}


\section{\textbf{Circle\label{Circle}}}

Let $r=$ radius, $C=$ circumference, $d=$ diameter, $A=$ area, $\pi
=\allowbreak 3.\,\allowbreak 141\,592\,653\,\allowbreak 589\,79...$

\FRAME{dtbpF}{1.8922in}{1.881in}{0pt}{}{}{circle.wmf}{\special{language
"Scientific Word";type "GRAPHIC";maintain-aspect-ratio TRUE;display
"PICT";valid_file "F";width 1.8922in;height 1.881in;depth 0pt;original-width
134pt;original-height 133.25pt;cropleft "0";croptop "1";cropright
"1";cropbottom "0";filename 'circle.wmf';file-properties "XNPEU";}}

\begin{itemize}
\item  The \label{Radius of circle}\textbf{radius} of a circle is the
distance $r$ from the center to any point on the circle. The \textbf{diameter%
} is the distance $d$ across the circle, or twice the radius.

$d=2r$

\item  The \label{Circumference of circle}\textbf{circumference} of a circle
is $\pi $ times the diameter.

$C=\pi D=2\pi r$

\item  The \label{Area of circle}\textbf{area} of a circle is the square of
the radius times $\pi $.

$A=\pi r^{2}$
\end{itemize}

\begin{example}
The circle with radius $5$ has diameter, circumference, and area 
\begin{eqnarray*}
d &=&2\times 5=10 \\
C &=&10\pi \approx 31.\,\allowbreak 416 \\
A &=&\pi \times 5^{2}=25\pi \approx 78.\,\allowbreak 54
\end{eqnarray*}
\end{example}

\subsection{\ Related Reference Topics}

{\small \hyperref{Table of Geometric Formulas For Length, Area, and Volume}{%
}{}{TAB_geom_formulas.tex}}

{\small \hyperref{Trigonometry}{}{}{TR_contents.tex}}

\subsection{\ Related Scientific Notebook Topics}

{\small \hyperref{Angular Measure}{}{}{../../Help/DMIndex.tex#Angular measure%
}}

{\small \hyperref{Conic Sections}{}{}{../../Help/DMIndex.tex#Conic sections}}

{\small \hyperref{Plotting Curves and Surfaces}{}{}{../../Help/DM6.tex}}

{\small \hyperref{Polygons}{}{}{../../Help/DMIndex.tex#Polygons}}

{\small \hyperref{Surfaces of Revolution}{}{}{%
../../Help/DMIndex.tex#Surfaces of revolution}}

{\small \hyperref{Trigonometry}{}{}{../../Help/DM4.tex}}

\noindent \hrulefill

\begin{center}
\begin{tabular}{ccc}
{\small \hyperref{\FRAME{itbpF}{13.9375pt}{14.4375pt}{3pt}{}{}{nblogo.wmf}{%
\special{language "Scientific Word";type "GRAPHIC";maintain-aspect-ratio
TRUE;display "PICT";valid_file "F";width 13.9375pt;height 14.4375pt;depth
3pt;original-width 24.0625pt;original-height 24.8125pt;cropleft "0";croptop
"0.9959";cropright "0.9937";cropbottom "0";filename
'Nblogo.wmf';file-properties "XNPEU";}}Computing Techniques}{}{}{%
../../Help/DMindex.tex}} & {\small \hyperref{\FRAME{itbpF}{13.9375pt}{%
14.4375pt}{3pt}{}{}{nblogo.wmf}{\special{language "Scientific Word";type
"GRAPHIC";maintain-aspect-ratio TRUE;display "PICT";valid_file "F";width
13.9375pt;height 14.4375pt;depth 3pt;original-width
24.0625pt;original-height 24.8125pt;cropleft "0";croptop "0.9959";cropright
"0.9937";cropbottom "0";filename 'Nblogo.wmf';file-properties "XNPEU";}}%
General Information}{}{}{../../Help/Index.tex}} & {\small \hyperref{\FRAME{%
itbpF}{13.9375pt}{14.4375pt}{3pt}{}{}{nblogo.wmf}{\special{language
"Scientific Word";type "GRAPHIC";maintain-aspect-ratio TRUE;display
"PICT";valid_file "F";width 13.9375pt;height 14.4375pt;depth
3pt;original-width 24.0625pt;original-height 24.8125pt;cropleft "0";croptop
"0.9959";cropright "0.9937";cropbottom "0";filename
'Nblogo.wmf';file-properties "XNPEU";}}Reference Library}{}{}{%
../ReferenceIndex.tex}}
\end{tabular}
\end{center}

\noindent \hrulefill

\end{document}
