5th grade math-Day 2 finding volume

I can find the volume of a figure After watching the video answer the following question The bottom layer is 2 cubic inches wide and 5cubic inches long. For a total of 10 cubic inches in the layer. Because each layer will have the same number of cubes and there are 3 layers, the volume of the box is 3 cubic inches x 10 cubic inches or 30 cubic inches