Step-by-step explanation:
There are 48.7 cups in total
2/18 of 48.7 cups is needed for volcano
Total amount needed for experiments are :
2/18 of 48.7 = 97.4/18 = 5.411 cups
Answer:

Step-by-step explanation:
Use the circle equation, 
Plug in the center and radius:

Simplify:

So, the equation is 
Answer:
it would be 1/6 2
Step-by-step explanation:
the reason is because when you multiply 1/6 by 1/6 you get 1/36