"Published in Vacaville, California, USA"
How many washers can be made from a cube of metal 4 in. on a side, if the washers are ⅝ in. in diameter and ⅛ in. thick? The hole in the center of the washers is ¼ in. in diameter.
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 washer which is a concentric right circular cylinder is
Therefore, the number of washers that can be made from a block of cube of metal 4 in. on a side is
