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Math Help - Need help with figuring out distances

  1. #1
    Kayl669
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    Need help with figuring out distances

    Hello everyone,

    I have a problem. I have a digital map that I have drawn of a fictional city in my paint program. I used a paint tool to measure the width of one of the roads (7.0 pixels). Now I know that a standard two lane road is 20 feet in width. So I figure 7.0 pixels = ~20 feet. The map image is 1488x1062 pixels.

    Now, using this information how can I figure out the distance of the entire width of the city map in feet?
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  2. #2
    Bar0n janvdl's Avatar
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    Quote Originally Posted by Kayl669 View Post
    Hello everyone,

    I have a problem. I have a digital map that I have drawn of a fictional city in my paint program. I used a paint tool to measure the width of one of the roads (7.0 pixels). Now I know that a standard two lane road is 20 feet in width. So I figure 7.0 pixels = ~20 feet. The map image is 1488x1062 pixels.

    Now, using this information how can I figure out the distance of the entire width of the city map in feet?
    7. 0 Pixels = 20 feet
    1488 Pixels = x feet

    x = \frac{20 \times 1488}{7}

    x = 4251 \ feet \ approx
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  3. #3
    MHF Contributor
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    if 7pixels = 20ft, then,

    (1488 pixels)(20ft/7pixels) = (1488*20)/7 ft = 4251.43 ft

    (1062 pixels)(20ft /7pixels) = (1062*20)/7 ft = 3034.29 ft
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