Thomas happened to notice that at 4:00 p. m. on his uncle's farm, a fence post that was 5 feet tall cast a 3 foot shadow. he also noticed that a nearby tree cast a 12 foot shadow. how tall is the tree?

Question

Turbo

Mathematics

18 December, 16:10

Thomas happened to notice that at 4:00 p. m. on his uncle's farm, a fence post that was 5 feet tall cast a 3 foot shadow. he also noticed that a nearby tree cast a 12 foot shadow. how tall is the tree?

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Answers (2)

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Kristen Kim · Answer 1

I used the proportion:

5:3=x:12

x = ((12) (5)) / 3=20

20 feet

Kaylie · Answer 2

If he noticed both of them at exactly 4pm, the fence post would be 5:3, 12 is 4 x 3, giving you the multiplier, so 5 x 4 is 20, a 20:12 ratio which means that the tree should be approximately 20 feet tall.