SOLUTION: Please need help my friend recommended this site. they told me I should leave lots of time for help but I was foolish! your help would be happily received! Thanks! general info

Question 743516: Please need help my friend recommended this site. they told me I should leave lots of time for help but I was foolish! your help would be happily received! Thanks!
general info
Common aquarium holds 10 gallons. I know volume of a right rectangular tank is found by multiplying the length of the tank times the width times the height, or V=lwh. I know 231 cubic inches are equal to 1 gallon.
question
A new customer would like an aquarium that is 22 inches long 21 inches deep and holds 16 gallons of water. He wants to know if the tank would fit on a shelf that is 10 inches wide. I need to know if it would fit and why (or why not)
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
At least the question part is better than your next one. So you know two of the dimensions and want to solve for the third dimension.

Solve for z, the dimension other than "long" and "deep".

(further steps in calculation):

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