Answer:
They sold 120 milkshakes that day
Step-by-step explanation:
We can set up a proportion


Note: If you have some value,
, and it is
of the total amount, you can find the value by doing the equation 
Answer:
5
Step-by-step explanation:
Answer:8552.98 π,
Step-by-step explanation:
π times 16.5 squared times 10