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Math Help - Rate of Decrease

  1. #1
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    Ornskoldsvik
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    Rate of Decrease

    Hey , wondering if anyone could help me with this problem:

    What was the rate, in km^2/yr, that each of the glaciers receeded between 1850 and 1993?

    a. Aggasiz Glacier
    b. Vulture Glacier

    The values for them are:

    1850 Area:

    a. Aggasiz 4.06 km^2
    b. Vulture 0.77 km^2

    1993 Area:

    a. Aggasiz 1.02 km^2
    b. Vulture 0.21 km^2

    I need to find the speed, not the percentage (which I figured out in a previous question which was 75% and 73% respectively).

    I did this question, but I forgot how to get the answers. They are:

    a. 0.0214 km^2/yr
    b. 0.00392 km^2/yr
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  2. #2
    Master Of Puppets
    pickslides's Avatar
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    For each glacier calculate ([km^2 at 1993] - [km^2 at 1850] ))/(1993-1850)
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  3. #3
    Junior Member
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    Ornskoldsvik
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    Thank you pickslides! I appreciate it
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