Answer:
477.28 ft^2
Step-by-step explanation:
r =4
Circular window
A = pi r^2
A = pi (4)^2
A = 50.24
Semicircular window
1/2 A = 1/2pi r^2
1/2 A = 1/2 (50.24)
= 25.12
Quarter circular window
1/4 A = 1/4pi r^2
1/4 A = 1/4 (50.24)
= 12.56
She buys 2 circular windows
2 * 50.24 = 100.48
She buys 5 semi circular windows
5 * 25.12 = 125.6
She buys 20 quarter circular windows
20 * 12.56 = 251.2
The total area is
100.48+125.6+251.2=477.28 ft^2
