"Published in Newark, California, USA"
How many bricks each 8 in. by 2 ¾ in. by 2 in. will be required to build a wall 22 ft. by 3 ft. by 2 ft. (not allowing for mortar)?
Solution:
To illustrate the problem, it is better to draw the figure as follows
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| Photo by Math Principles in Everyday life |
The volume of a block of brick is
The volume of a wall made from bricks is
Therefore, the number of bricks used to build a wall is
