The under-sea-water tunnel that connects england and france is the world's longest tunnel called also the chunnel for the english channel. it actually consists of three tunnels built side by side. each tunnel is a half-cylinder that is 50,000 meters long and 4 meters high. how many cubic meters of dirt had to be removed to build the chunnel?

2400000pi cubic meters of dirt had to be removed to build the Chunnel.

Step-by-step explanation:

Volume of a half-cylinder can be stated as:

where

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

the correct answer is b. negative exponential growth.

step-by-step explanation:

you can tell it's an exponential function because it decreases rapidly then levels out and never touches the x-axis.

it is negative because the y-axis decreases as the x-axis increases.

therefore it is a negative exponential growth graph.

hope i !

hello, there is a new name in town and that's the human spider!

answer: d.) the total number of protons and neutrons is 15

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