HELPPPPPPPP PLSSSS KAILANGAN KO NA BUKAS

[tex]80 \: {ft}^{2} [/tex]
Step-by-step explanation:
divide the polygon into two parts as shown in the picture. then find the area of each polygons then add.
1st area = 4 × 4 = 16
2nd area = 16 × 4 = 64
total area = 16 + 64 = 80 ft^2