It would be 3840. The pattern is: x2, x4, x6, x8, x10. Hope that helps! :) :D
Answer:

Step-by-step explanation:
The irregular polygon is made of a large rectangle with two smaller rectangles cut out of it. Therefore, we can find the area of the large rectangle and subtract these two smaller rectangles:
.
Kelso / jones = 84.5/33.8 = 5/2 = 2 1/2
==> c