How many cubes would you use to make the structure above/below

We are given a diagram.

We need to find the number of cubes would we use to make the given structure.

In order to find the number of cubes, we need to find the length, width and height of the given structure.

For the given structure, length = 4 units.

Width = 3 units and

Height = 2 units.

Length × width × Height = 4 × 3 × 2 = 24 cubes.

Now, subtracting missing number of cubes.

Missing number of cubes = 2+5 = 7.

Reamining number of cubes =24 -7 = 17 cubes.

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