We know that .
Using this rule,
.
We also know that .
Now we know that so,
Hope this helps :)
Answer:
C Jacob
Step-by-step explanation:
Alfredo: 157.5/18 = 8.75
Helene: 198/24 = 8.25
Jacob: 142.5/15 = 9.53
Leonna: 111/12 = 9.25
36 x 2 = 72
72-36 = 36 - 5 = 31
31 rocks to start with
16.5 is the area