# Physics

Many hot-water heating systems have a reservoir tank connected directly to the pipeline, so as to allow for expansion when the water becomes hot. The heating system of a house has 57.4 m of copper pipe whose inside radius is 7.52 x 10- 3 m. When the water and pipe are heated from 22.7 to 72.8 °C, what must be the minimum volume of the reservoir tank to hold the overflow of water?

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