Answer:

Step-by-step explanation:
Given
Dimension: 4.75in, 4.75in and 28.5in
<em>[The complete dimension is missing from the question]</em>
Required
Calculate the volume
The volume is calculated as thus:


--- approximated
Let 't' represent the time of the walk in minutes.
5.1*t = 220
t = 43.14 min
The person needs to walk at least 43.14 minutes to but at least 220 calories.
If she has 10/12 and uses 8/12 then you just subtract.
Since the denominators are the same you just subtract 10-8 and get 2
the denominator is the same for your answers and so it is
2/12
X-(4.5+1.5+1+3)= 8
x-10=8
+10. +10
x= 18
He took $18 to the fair. You take his original amount and subtract the things he paid for/bought to get what he came home with. I hope it helps!