Question

A water reservoir is shaped like a rectangular solid with a base that is 40 yards by 30 yards , and a vertical height of 30 yards 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 was down to 6 yards How much water was used in the three - month period How much water was used in the three - month period ?

Answer 1

7200 yd³

Explanation:

The volume of the water used is the product of the dimensions of the rectangular prism it occupied.

The base area is ...

A = LW = (40 yd)(30 yd) = 1200 yd²

The depth of water used is 6 yd, so the total volume used is ...

V = Bh = (1200 yd²)(6 yd) = 7200 yd³

7200 yd³ of water was used in the 3-month period.