So, the circular swimming pool is a cylinder. It has 3 meters of depth and 5 meters in diameter. The formula of the volume of the cylinder is:
V= pir²h
r= 2.5, h=3
V= 3.14*(2.5)²*3
V= 58.875 m³
Answer: 58.875 m³ of dirt must be dug.
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