Bensmom Posted October 5, 2011 Share Posted October 5, 2011 I used to have simple instructions for measuring the height of large trees. I can't find my instruction sheet or the website. There was some sort of simple formula, but I can't remember. Can anyone tell me how to do this??? HS fall fun day in the park is Friday and I thought this would be a neat team activity for the older siblings who are being forced to attend what is really a kiddie event ;) Quote Link to comment Share on other sites More sharing options...
Ailaena Posted October 5, 2011 Share Posted October 5, 2011 A trig-free (but possibly inaccurate) solution: Hold a ruler in front of you. Line the base of the ruler up to the base of the tree and back up until the top of the ruler is lined up with the top of the tree. Choose a landmark on the tree that lines up with the 1" mark on the ruler (or get someone to make a mark). Measure from ground to mark, multiply by 12. :D Quote Link to comment Share on other sites More sharing options...
Myra Posted October 5, 2011 Share Posted October 5, 2011 (edited) Measure your own height and measure the length of the shadow you make on the ground. Measure the tree's shadow on the ground. set up a proportion and solve your height = H (tree's unknown height) your shadow tree's shadow For example - if your height was 40, your shadow 5, tree's height (unknown), and tree's shadow 10 then 40 = H 5... 1 0 cross multiply giving 40 x 10 = 5H 400=5H Divide both sides by 5 80=H that's the tree's height Hope that makes sense, Myra Edited October 5, 2011 by Myra Quote Link to comment Share on other sites More sharing options...
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