If the roof area of an average-sized home is ??? m?, how much water could

be collected from the roof of an average home in the same storm? What will be an ideal response?


a. Convert ?.? cm of rainfall to meters.
2.5 cm รท 100 cm/m = 0.025 m
b. Multiply your answer to ??a by the roof area to get the volume of
water in m?.
0.025 m x 150 m2 = 3.75 m3
c. Convert your answer to ??b to gallons.
3.75 m3 x 264 gal per m3 = 990 gal

Environmental & Atmospheric Sciences

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