Answer:
6.36 m
Step-by-step explanation:
The length of the tree's shadow is 7 m + 1.8 m = 8.8 m. Tanya's height is 1.3/1.8 times the length of her shadow. The tree height is, likewise, 1.3/1.8 times the length of its shadow, so is ...
tree height = (1.3/1.8)×(8.8 m) ≈ 6.36 m
The tree is about 6.36 m tall.
