What you would do first is multiply 22in times 12in, which is [tex] 264in^{2} [/tex].
Then, you would do that times 15in, which is [tex] 3960in^{3} [/tex].
So, the answer to the first question is [tex] 3960in^{3} [/tex].
The next answer would be that no, the volume would not change because taking off the lid will not change how much the aquarium can hold.