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math

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What is the scale factor if a 8.9 m object appears as 6.5 cm in a picture?

  • math -

    8.9 m = 890 cm

    so scale = 6.5 : 890
    = 65 : 8900
    = 13 : 1780
    = 1 : 136.923 , some people insist that the smallest component of the ratio must be 1

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