Question 605834
If {{{ A }}} is the area of the circle,
you are given that 
{{{ A = 32 }}} miles2
The formula for the area of a circle is
{{{ A = pi*r^2 }}} so,
{{{ 32 = pi*r^2 }}}
{{{ r^2 = 32/pi }}}
{{{ r = sqrt( 32/pi ) }}}
{{{ r = sqrt( 10.1859 ) }}}
{{{ r = 3.1915 }}}
The diameter is twice the radius, so
diameter is {{{ 2*3.1915 = 6.3831 }}} miles