Answer: The volume of shell is 12.8π mm².
Step-by-step explanation:
Since we have given that
Radius to the inside of the shell = 4 milimeters
Radius to the outside of the shell = 4.2 milimeters
Since r changes from 4 mm to 4.2 mm
so, 
As we know that
Volume of shell is given by


So, the volume of shell is 12.8π mm².
Answer:
40 minutes (I think)
Step-by-step explanation:
Calculate the time into minutes
15mph-0.25mpm
18mph-0.3mpm
add them together to find out how far they go combined each minute
0.55
divide 22 by 0.55 to find the total time
40 minutes
Rise over run
aka
change in y over change in x
Answer:
I DO NOT KNOW BECAUSE I JUST NEED POINTS SORRY
Step-by-step explanation:
SORRY
Answer:
idk but 2 looks correct humph