The aquarium is 12 inches high. The formula for finding the volume of a rectangular prism is width x height x length. So I multiplied 24 by 10 and came up with 240. Next, I divide the volume 2,880 by 240 and came up with the answer 12. Lastly, I check my answer to ensure that it is right. 24 x 10 x 12 x 2,880.