1 shape:
16+10=26; 26x25=650 we made the sqare. Now Subtract the area of the triangles: 10x10=100/2=50 (50 is the area of the right imagenary triangle.
21x16=336/2=168 (168 is the area of the left imagenary triangle.
Subtracting: 650-50-168=
432 units2
2 shape:
Formula: A=Pr2
r=4
A=3.14x16
A=50.24
You`re welcome