Question 119103
if the radius {{{r}}} of a circle is {{{8 in}}} and the diameter {{{d}}} is equal to {{{2r}}} , then the diameter {{{d}}} is {{{16in}}}

{{{C = Pi*d}}}........   {{{Pi=3.14}}} (approximately)

{{{C = 3.14 *16in }}}   

{{{C = 50.24in}}}