Answer:
w = 16.875 inches
Step-by-step explanation:
Given that the ratio of the length to width in a full-size cello is approximately 8 to 3.
This will be a constant for all cellos
Using the above we can find out length if we know width and vice versa.
Here we know the length = 45 inches
Since 
BY cross multiplication we find that
8w = 3(45)
Or w = 16.875 inches
Verify:
Let us check our answer by comparing with proportion
l/w = 45/16.875 = 8/3
Hence our answer is right
The volume would be 14.14.
To find the volume of a sphere, you:

14.14 would be answer.
Answer:
From the info i have +15, -9. +11, -5 its 3
Step-by-step explanation:
The answer is: 6, 7, 7 1/2, 7 3/4.