i need help asap please i'm really stuck on this

Answer:
A=342 ft^2 (dark section)
A = 108 ft^2 (light section)
Step-by-step explanation:
18 x 25 = 450
9 x 12 = 108
450-108= 342
Answer:
A=342 ft^2 (dark section)
A = 108 ft^2 (light section)
Step-by-step explanation: