Answer:
a. 9
Step-by-step explanation:

It is the first one on the left ( 4 divided by 7)
let the exterior angle be x
x=60°+80°(being one exterior angle is equal to two interior angle)
x°=140°
You basically answered the question yourself.
2 1/4 * 1 5/9 = 3.5
The area is 3.5 in^2
Its (2+h)+3 that's the answer