If you take the total height and divide it by the number of cases it, it will then give you the heigh of just one case.
90 divided by 6=15
It’s 15 millimeters per DVD case. Then you take 15 and multiply it by 13 to get the total height of the stack of 13 cases.
Hope this helps!
24.6-17= 7.6 (km) i think so
It should be 78.54.
Double check that.
Formula: V=πr2h/3
r2 is R squared
5 I guess I don't know if it's the right answer
