I think it’s 28
Okay so you divide the shape into three shapes. A square with the sides as 4•4. A rectangle with the sides 4•2. And a triangle with the sides 4•2.
4•4 = 16
4•2= 8
4•2 divided by 2 = 4
Then add
16+8+4= 28
I’m not for sure if this is right if it’s wrong just ignore it I’m sorry