Estimating the Height of Trees
The picture on the right shows Tyler standing next to a tree. Several
things about this picture make it possible to estimate this tree's height:
- The picture includes
the top of the tree and the bottom, so you can measure it on your computer
- Tyler is standing
at the base of the tree, right next to it, so his feet start at the
same place as the base of the tree.
- We know what Tyler's
real height is. Tyler was132 cm tall when we took this picture.
Let's say you hold
your ruler up to this picture on your computer screen and measure Tyler
and measure the tree. On the picture, Tyler is 2 cm and the tree is 10
Now divide the tree
height by Tyler's height:
10 divided by 2 equals
5.0. This means that the tree is 5.0 times taller than Tyler.
So, if Tyler is 132
cm tall: 132cm x 5.0 = 660 cm
Our estimate of the
tree height is 660 cm tall! Wasn't that easy?
you try some of these problems yourself!