Method 1
Erikas walked 30 meters away from the treeDominykas stood up next to the tree
Erikas started measuring how many times the tree was bigger than Dominykas
Dominykas height was 1,74 cm and the tree was 5.5 times bigger
So we multiplied - 1,74*5.5= 9.57
The height of the tree was 9.57
Method 2
Our maths teather gave us a big rulerErikas had to hold it verticaly and walk backwards until the tree was completely covered by the
ruler, it shouldn't be longer than the tree.
We measured distance between Erikas and the tree
ant it was 9.4 meters
So based on triangle similarity feature we measured tree height - 9.4 meters
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