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Water tank

Act 1

A video is shown of an octagonal water tank being filled. How long will it take to fill up the water tank?

Act 2

Further information is presented giving the dimensions of the tank, conversions, and a video with timer showing the rate at which the tank is filled.

Act 3

The answer is given in the form of a fast forward video with a timer.


The filling activity is reversed, with the tank shown being emptied. How long will it take for the tank to drain?

Sequel act 1

​Sequel act 2

​Sequel act 3



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