Answer:

Step-by-step explanation:

Answer:
20
Step-by-step explanation:
20 is divisible by 4, 5 and 10
30/35 = 6/7
8/40 = 1/5
15/20 = 3/4
This would help :))
When all three are put together you get a rectangle. Therefore we can use this formula to solve it:
A=lw
=(10.5+12)×15
=22.5×15
=337.5 ft^2
This means C is the answer. Hope this helps.