Answer: 46 square units
Explanation:
First divide the given polygon by joining FS in triangle FNS and rectangle WFSC.
In triangle FNS, construct a line from N (2,4) to its base at (2,-2) and name it point O.
Since it is perpendicular to the base of the triangle therefore, it is the height of the triangle.
Now, by distance formula,

Area of triangle =

Now, in Rectangle WFSC by the distance formula
WF=CS=2 units, FS=WC=9 units
Area of rectangle=

Now, Area of polygon WFNSC= area of triangle +area of rectangle
=27+18=46 square units