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Mathematics 8 Online
OpenStudy (anonymous):

How many gallons of water are needed to raise the level of a swimming pool 75' x 42' four inches above its present level 1 cubic foot=7 1/2 gallons

OpenStudy (skullpatrol):

Any ideas?

OpenStudy (anonymous):

Well i multiplied 75 by 42 and got 31500

OpenStudy (anonymous):

And then im kind of just stuck

OpenStudy (skullpatrol):

Don't forget the units.

OpenStudy (anonymous):

Okay so 31500 feet

OpenStudy (skullpatrol):

Nope.

OpenStudy (skullpatrol):

75 feet * 42 feet

OpenStudy (anonymous):

Oh srry extra zero

OpenStudy (anonymous):

So 3150 feet

OpenStudy (skullpatrol):

$$\text{ length in feet * width in feet = Area in ?}$$

OpenStudy (anonymous):

So u convert it inches

OpenStudy (anonymous):

77800

OpenStudy (skullpatrol):

No, what are the units of "area"?

OpenStudy (anonymous):

I mean 37800 inches

OpenStudy (anonymous):

Cubic feet

OpenStudy (skullpatrol):

Define area?

OpenStudy (skullpatrol):

area: The area of a region is the number of *square* units it contains.

OpenStudy (skullpatrol):

$$\Huge feet*feet=(feet)^2$$

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