Question 1022994
That's one big circle,
.
.
.
So the diagonal of the square would be equal to the diameter of the circle.
From the square,
{{{s^2+s^2=D^2}}}
{{{2s^2=D^2}}}
{{{s^2=D^2/2}}}
{{{A[s]=D^2/2=1800}}}
{{{D^2=3600}}}
{{{D=600}}}
{{{R=D/2}}}
{{{R=300}}}{{{ft}}}