Question 1044030
basic question
circumference of circle is given by
{{{C=2*pi*r}}}
{{{47.1=2*pi*r}}}
{{{47.1=2*pi*r}}} divide by {{{2}}}
{{{(47.1)/(2)=pi*r}}}
{{{23.55=pi*r}}} divide by {{{pi}}}
{{{(23.55)/(pi)=r}}}
{{{7.5=r}}}
{{{diamete=2*r}}}
{{{diameter=15.0}}}

feedback is welcome