Question 256027
CIrcumference formula is
(i) {{{C = 2*pi*r}}}
So, from (i) we have
{{{47.1 = 2*pi*r}}}
or
{{{47.1 = 2*3.14*r}}}
and solving for r, we get
{{{r = 7.5}}} in.
The first cut was made along the "diameter" of the pizza. The diameter is 2r or 15 in.