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August 12th, 2018, 12:36 PM   #1
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Joined: Aug 2018
From: Warrington

Posts: 50
Thanks: 1

Working the height out

You want to get out of the sun and look for some shade. There are some trees by the side of the lake. You know you are just below 2 metres in height.

Estimate the height of the tree.
m
This answer will be marked within a reasonable range.
Attached Images
 tree.jpg (20.6 KB, 3 views)

 August 13th, 2018, 07:21 AM #2 Global Moderator   Joined: Dec 2006 Posts: 20,098 Thanks: 1905 8.6 m
 October 18th, 2018, 12:52 PM #3 Senior Member   Joined: Feb 2016 From: Australia Posts: 1,749 Thanks: 613 Math Focus: Yet to find out. If you cloned yourself a pile of times and then had several clones stand on your shoulders, roughly how many clones would you need to touch the top of the tree?
 October 18th, 2018, 01:03 PM #4 Math Team   Joined: Oct 2011 From: Ottawa Ontario, Canada Posts: 13,791 Thanks: 970 Measure your shadow and the tree's shadow: u = yours, v = tree's y = your height (which you know!) t = tree's height (?) y/u = t/v Go to town.....
 October 19th, 2018, 12:10 AM #5 Senior Member   Joined: Apr 2014 From: UK Posts: 895 Thanks: 328 I was thinking shadows too, but given the size of the meatsack's shadow in the picture, I concluded the tree must be enormous. Thanks from JeffM1

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