Shadow of tree

Miro stands under a tree and watches its shadow and shadow of the tree. Miro is 180 cm tall, and its shade is 1.5 m long. The tree's shadow is three times as long as Miro's shadow. How tall is the tree in meters?

Correct answer:

h =  5.4 m

Step-by-step explanation:

$$\begin{gathered} h_1=180\text{cm}\to \text{m}=180:100\text{m}=1.8\text{m} \\ {t}_1=1.5\text{m} \\ {t}_2=3\cdot t_1=3\cdot 1.5=\frac{9}{2}=4.5\text{m} \\ h=3\cdot h_1=3\cdot 1.8=5.4\text{m} \end{gathered}$$

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