Answer:
279 ft²
Step-by-step explanation:
A=bh
A=16x16
A=256
Subtract the area of island
A=bh
A=3x7
A=21
256-21=235
Then you have to find the area of the trapezoid at the top, which is a reactangle and then two smaller triangles
A=bh
A=10x4
A=40
A=1/2bh
A=4x1x1/2
A=2
Multiply it by two because there are 2 of them
2x2=4
40+4=44
The area of the main part is 235 and the area of the side section is 44.
Add them together
235+44=279 ft²
