Answer:
The perimeter of the polygon is 
Step-by-step explanation:
see the attached figure with letters to better understand the problem
we know that
If the polygon circumscribes the circle
then
AB=AH
GH=GF
EF=ED
CB=CD
therefore
the perimeter is equal to

A. Unique triangle of a 70 Angle, 6 cm, and 9 cm.
Ab is congruent to de so the second choice
Answer:
100+100=200
160 +80 =240 240+200=440
Step-by-step explanation: first you must add the frist to sides
440+ the rest of the numbers.