If i am correct the area should 337inches
Step-by-step explanation:
my reason is becuase if you multiply these numbers
13* 6 = 78    and  8 * 8 = 64   and  10 * 17 + 170  and  last 5 * 5 = 25
they you add   170+ 78 + 64 + 25 =  337inches      so means the answer is 337 Your Welcome :D