Use the law of cosines to find a:

So to use the given numbers you get:

Which would come out to equal about 35.94
so a=35.9
Answer:
The cost of cone of popcorn is $ 2.59.
Step-by-step explanation:
The tub has a volume of 540.473 and costs $10. The cone has a volume of 140.035.
The cost of per unit volume is
$10/540.473
The cost of cone of popcorn is

Answer:
57
Step-by-step explanation:
138 dolllars multiply 115 and .20 and add your answer with the original amount