"Published in Vacaville, California, USA"
The lateral surface of a concrete octagonal pier of height 10 ft. is to be resurfaced. If each of the base edges is 1 ft., how many square feet of surfacing will be required?
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 lateral surface area of a concrete octagonal pier required to be resurfaced is
