Question 157477
Find the perimeter of the 11 ft radius circle, then double it (for figure eight).
The perimeter of a circle is,
{{{P[c]=2*pi*R}}}
so the perimeter of the figure eight is,

{{{P[8]=2*P[c]}}}
{{{P[8]=4*pi*R}}}
In this case, R=11,
{{{P[8]=4*pi*11}}}
{{{P[8]=44*pi}}}
Using {{{pi=3.14}}},
{{{P[8]=138.16}}}
The skater travels 138.16 feet once around the figure eight.