Question 1136587
The whole circle has {{{ 2pi = (18pi) /9 }}} radians
{{{ (( 17pi )/9 ) / (( 18pi ) / 9 ) = 17/18 }}}
Let {{{ A }}} = the area of the circle
{{{ (( 17pi )/2 ) / A = 17/18 }}}
{{{ A = ( 18pi )/2 }}} 
{{{ A = 9pi }}}