Question 56852
 A tree casts a shadow that measures 5 m. At the same time, a meter stick casts a
shadow that is 0.4 m long. How tall is the tree?
Let the measure of the tree=x
The measure of the meter stick=1m
Shadow of the tree=5m
shadow of the meter stick=.4m
These are similar triangles, so the ratio of height/shadow of the tree=ratio of height/shadow of the meter stick.
{{{x/5m=1m/.4m}}}
{{{5mx/5m=5m(1m)/.4m}}}
{{{x=5m^2/.4m}}}
{{{highlight(x=12.5m)}}}
Happy Calculating!!!