For June:
Bike:
(4) * (3 1/4) = 13 miles
Swim:
(4) * (2 1/2) = 10 miles
Total:
13 + 10 = 23 miles
For July:
Bike:
(3) * (4 3/4) = 14.25 miles
Swim:
(3) * (3 1/2) = 10.5 miles
Total:
14.25 + 10.5 = 24.75 miles
The difference between both months is:
24.75 - 23 = 1.75 miles
Answer:
the total distance Cameron bike and swim in July compared to the total distance he bike in swim in June was 1.75 miles greater
ANSWER
She can make 19 batches of oatmeal.
EXPLANATION
First we can change the mixed number into an improper fraction:

In this problem, r = 2/3. The division is:

Using the KFC rule:

Solving we can see that the denominator of the first fraction can be simpliied with the numerator of the second fraction:

Tyra can make 19 batches of oatmeal with 12 2/3 cups of sugar.
Around 4.5π. This can be determined by the volume of a sphere formula.