If you ever wanted to figure out the height of a tree, there are several ways to go about it. Click through to see all of them.
I like the method below because look at the perfect application of isosceles and similar triangles!
Find a stick the length of your arm. Hold your arm out straight with the stick pointing straight up (90-degree angle to your outstretched arm). Walk backwards until you see the tip of the stick line up with the top of the tree. Your feet are now at approximately the same distance from the tree as it is high (provided the tree is significantly taller than you are, and the ground is relatively level). Old logger method. Simple.
— Answered by shirlock homes
(via Is There an Easy Way to Measure the Height of a Tree? | Lifehacker)
