40% because 32/80 is 0.4 move two decimal points
Step-by-step explanation:
option d is correct
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Answer: 5.22m
Step-by-step explanation:
Using the rule of similar triangles where the the side lengths of two similar triangles are proportional
Parameters :
Tree height = t
Raul's height = 1.53m
Height of Raul's shadow = 8.73m
Total length of tree shadow = distance walked along tree shadow+ distance left to the end of tree shadow, Therefore,
Total length of tree shadow = 21.11 + 8.73 = 29.84m
Therefore,
Raul's ratio = tree's ratio
Raul's height : Raul's shadow = tree height : tree shadow
1.53 : 8.73 = t : 29.84
1.53/8.73 = t/29.84
1.53 × 29.84 = 8.73× t
t = 45.6552 / 8.73
t = 5.22m