Visualising Solid Objects by Viewing the Smallest Unit

Q.

Question 58
Fill in the blank to make the statement true.
Identical cubes are stacked in the corner of a room as shown below. The number of cubes that are not visible are ___.

Q. In the following figure, this shape is formed by using 6 three-dimensional regular objects. Each of these individual objects is a ___ .

1. square
2. rectangle
3. cuboid
4. cube