Question 1128109
{{{ 150/360 = 5/C }}}
{{{ 5/12 = 5/C }}}
The circumference, C is {{{ 12 }}} km
{{{ C = 2pi*r }}}
{{{ 12 = 2*pi*r }}}
{{{ r = 6/pi }}}
{{{ r = 1.91 }}} km