"Published in Newark, California, USA"
An indoor roller skating rink with an area of 1,500 sq. yd. has a concrete flooring 3 in. thick. Find the amount of concrete used in laying the floor.
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| Photo by Math Principles in Everyday Life |
Solution:
Consider the given figure above
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| Photo by Math Principles in Everyday Life |
The floor for the roller skating rink must be smooth and uniform in thickness. If the thickness of the floor is the same within the roller skating rink, then it is considered a cylinder.
Since the surface area of a roller skating rink as well as the thickness are given in the problem, then we can get the amount of concrete which is the volume of a cylinder used in laying the floor as follows
Therefore, the amount of concrete required for laying the floor is
