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How could the height of a tall pine tree be estimated without climbing it and measuring it?

  • math -

    measure the length of the tree's shadow

    then measure the length of your own shadow
    set up the proportion:

    (height of tree)/(length of tree shadow) = (your height)/(length of your shadow)

    height of tree = (your height)(shadow of tree)/(your shadow)

  • math -

    11

  • math -

    11

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