Question 747641
A water reservoir is shaped like a rectangular solid that has a base of 50 yds by 30 yds. At the start of a three month period of no rain, the reservoir was completely full, at the end of this period, the height of the water went down to 6 yds, how much water was used in this three month period? 
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"went down to 6 yds" from what?
Not enough info