There are 3 types of faces for a regular brick. Count the number of faces of each type on the brick wall shown below.
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Solution
As we know, a regular brick has 3 different kinds of faces, which can be denoted by 1, 2 and 3 as per the figure given below:
Let's mark them in the wall figure.
Number of no.1 faces = 8
Number of no.2 faces = 12
Number of no.3 faces = 8