# Conserving water

Calculate how many euros are spent annually on unnecessary domestic hot water, which cools during the night in pipeline. Residential house has 129 m of hot water pipelines 5/8" and the hot water has a price of 7 Eur/m3.

Result

p =  65.2 Eur

#### Solution:

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#### To solve this example are needed these knowledge from mathematics:

Do you want to convert length units? Do you know the volume and unit volume, and want to convert volume units?

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