Answer:
2400000pi cubic meters of dirt had to be removed to build the Chunnel.
Step-by-step explanation:
Volume of a <em>half-cylinder</em> can be stated as:
where
- pi is the constant π
- r is the radius (here the height)
- h is the height ( here the lenght)
Thus, one half-cylinder tunnel volume is: =800000pi
Since there are 3 half-cylinder tunnels, 3×800000pi=2400000pi cubic meters of dirt had to be removed to build the Chunnel