Answer:
Step-by-step explanation:
5x12=60
(227.5x5x120)=13650
13650-9500=4150
apply formula
(2x12x4150)/((13650(60+1))=0.1196
0.1196x100=11.96% 0r 12%
Area = (39x18)/2 =351
answer = 351 m^2
The answer is C
I did this test yesterday
Here is the work hope this helps!