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Week 1 Problem B
Archis Wed Oct 08, 2008 5:21 pm
A calculator is permitted for this problem
Note answers: may vary based on estimations
Around the District of Columbia, areas received between 7 and 19 inches of snow. According to one local weather report, within a 50-mile radius of DC, over 5 billion tons of snow fell. How many square feet of area are in a "50-mile radius"? Use the numbers above to estimate the weight of one cubic foot of the snow that fell in DC.
Note answers: may vary based on estimations
Around the District of Columbia, areas received between 7 and 19 inches of snow. According to one local weather report, within a 50-mile radius of DC, over 5 billion tons of snow fell. How many square feet of area are in a "50-mile radius"? Use the numbers above to estimate the weight of one cubic foot of the snow that fell in DC.
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Re: Week 1 Problem B
Archis Wed Oct 08, 2008 5:22 pm
My Solution:
- Spoiler:
- They want it in square feet so thus: pi*(50*5280)^2 Store this as X in the calculator.
Now to find the weight of one cubic foot, we know that 13 inches fell down (median of 7 and 19) and that gives 13*(X*144), because you're changing into inches. Store this as Y
Now find the weight of 5 billion tons per pound, that would be (5*10^9) * 2000. Store as Z
Find Z/Y, giving you approximately .024. Multiply this by 1728 for the cubic foot conversion and you get 41.5 or around that estimate, based on where you rounded.
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Mira Holford- The Cool Cube
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Re: Week 1 Problem B
Mira Holford Thu Oct 09, 2008 4:55 am
Steve wrote:how do u store stuff as X and Y in your calculator
sto-> x
i think
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Mira Holford- The Cool Cube
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Steve- The Cool Cube
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Mira Holford- The Cool Cube
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Steve- The Cool Cube
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Re: Week 1 Problem B
Mira Holford Tue Oct 14, 2008 12:50 am
Steve wrote:well i gave up... but at least i tried
me 2
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