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 pls solve this!!!
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bordoe
New Member

USA
1 Posts

Posted - 09/12/2007 :  05:57:12  Show Profile
OK! hi everyone... am just an uncle here trying to help out my nephew... with one of his math homework and the problem went like this...

there's is X town which has an area of 20 mi and during the past week it had an inch of rain. and so the question was how much rain did X town had in cubic feet...

we got it this way:

20mi we converted it to ft. and we got 105,600ft.

and 1in. of rain we converted it to feet and we got 0.0833ft

and knowing from the problem that we were looking for the volume so i know the equation was L x W x H, but since the area was already given so L x W = area, so what we did was just multiply the AREA x H, and so we got 8,796.48ft of rain...

But when he got to school the teacher said it was wrong and the teacher's answer was 50,000,000.00ft.... how he got it i dont know...

so am asking people in this forum to look @ the problem and let me know if we overlooked on something or if the teacher was wrong... please enlighten us...

thank you much!!!

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Subhotosh Khan
Advanced Member

USA
9117 Posts

Posted - 09/12/2007 :  07:13:48  Show Profile
quote:
Originally posted by bordoe

OK! hi everyone... am just an uncle here trying to help out my nephew... with one of his math homework and the problem went like this...

there's is X town which has an area of 20 mi and during the past week it had an inch of rain. and so the question was how much rain did X town had in cubic feet...

we got it this way:

20mi we converted it to ft. and we got 105,600ft. [squared]<------- What conversion factor did you use 1 mi = 5280 ft & 1 sq.mi = 27878400 sq.ft.


and 1in. of rain we converted it to feet and we got 0.0833ft

and knowing from the problem that we were looking for the volume so i know the equation was L x W x H, but since the area was already given so L x W = area, so what we did was just multiply the AREA x H, and so we got 8,796.48ft of rain...

But when he got to school the teacher said it was wrong and the teacher's answer was 50,000,000.00ft.... how he got it i dont know...

so am asking people in this forum to look @ the problem and let me know if we overlooked on something or if the teacher was wrong... please enlighten us...

thank you much!!!



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