Answer: 13.72 mm²
Explanation:
First you can find the area of the shape, then you can subtract the circles from the middle.
The total area before subtracting the circles is 20 :
Using the given height (5) and width (8), and the triangle area formula
= 20
The area of the circles is 6.28 :
All you need is radius to find the area of a circle,
, and for both circles the radius is 1.
Interestingly, the area of a 1 wide circle is just pi (cuz
is pi)
Add the two circles together, then subtract them from the total area:

and units because area,
13.72 mm²