<P> π is commonly defined as the ratio of a circle 's circumference C to its diameter d : </P>
<P> π is commonly defined as the ratio of a circle 's circumference C to its diameter d : </P>
the value of pi can be found as
the value of pi can be found as
the ratio of a circle 's circumference C to its diameter d
the ratio of a circle 's circumference C to its diameter d