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elixir [45]
2 years ago
11

#13. A lighthouse casts a 128-foot shadow. A nearby lamppost that measures 5 feet 3

Mathematics
1 answer:
Ad libitum [116K]2 years ago
7 0

Answer:84

Step-by-step explanation:Using proportions, it is found that the height of the lighthouse is of 84 ft.

This question is solved by proportions, using a rule of three.

For a height of 5.25 feet, the shadow is of 8 feet. What is the height when the shadow is of 128 feet?

The rule of three is:

5.25 feet - 8 feet

x feet - 128 feet

Applying cross multiplication:

The height of the lighthouse is of 84 ft.

credit:joaobezerra

please rate and thanks

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