Answer:
h = 5.23 m
Therefore, the tree is 5.23 m tall
Step-by-step explanation:
The question can be represented by the sketch in the attached image.
Where BE is the height of raul and CD is the tree's height (h)
Triangle ABE and ACD are both similar triangle.
And the ratio of their sides are equal
So,
BE/AE = CD/AD .....1
From the sketch,
BE = 1.53m
AE = 8.73m
CD = h
AD = 8.73 + 21.11m = 29.84m
Substituting into equation 1
1.53/8.73 = h/29.84
h = 29.84 × 1.53/8.73
h = 5.23 m
Therefore, the tree is 5.23 m tall