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a scale distance of 3.5 cm on a certain maps represents an actual 17.5 km.what actual area does 7 square centimetres on the dame map represents?

  • math - , Sunday, January 20, 2013 at 8:35am

    just use a proportion to first find the length.

    3.5cm/17.5km = 7cm/x km
    3.5x = 7(17.5)
    x = 35

    so 7 cm represents 35 km
    the area of that would be 35^2 = 1225 km^2

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