It is given in the question that
A person is 185 cm tall and casts a shadow 145 cm long. A nearby tree casts a shadow which is 212 cm long.
And we have to find the height of the tree. Let it be x cm .
Now we use the ratio, which is
[tex]\frac{185}{145} = \frac{x}{212}[/tex]
Now we need to get rid of the denominators, and for that we do cross multiplication. That is
[tex]185*212 = 145 x[/tex]
Dividing both sides by 145
[tex]x = \frac{185 * 212}{145} =270.5cm[/tex]
And that's the required height of the tree.
