Posted by **shannon** on Sunday, February 27, 2011 at 8:00pm.

to estimate the height of a tree, Dave stands in the shadow of the tree so that his shadow and the tree's shadow end at the same point. Dave is 6 feet 4 inches tall and his shadow is 15 feet long. If he is standing 66 feet away from the tree, what is the height of this tree?

- geometrY -
**Helper**, Sunday, February 27, 2011 at 9:01pm
http://member.tripod.com/~BDaugherty/GCSEMaths/shapes.html

See the last picture at the bottom of this web page (for a pic of this exact problem).

Using ratios,

Tree height = T

15/66 = 6.33/T

15T = 512.73

T = 34.182

T = 34.182

- geometrY -
**shannon**, Monday, February 28, 2011 at 12:57am
I think you did something wrong

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