Yahoo Answers: Answers and Comments for Math help? [Mathematics]
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From Anonymous
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Wed, 19 Jun 2019 22:00:35 +0000
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Yahoo Answers: Answers and Comments for Math help? [Mathematics]
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From Inquizetif: 2.9/1.53 = 1.89
Pole is 1.89 times taller tha...
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Wed, 19 Jun 2019 22:12:30 +0000
2.9/1.53 = 1.89
Pole is 1.89 times taller than its shadow
45.25 x 1.89 = 85.52 meters rounded up to 86 meters

From RR: They are similar triangles, so there is a dire...
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Thu, 20 Jun 2019 14:01:32 +0000
They are similar triangles, so there is a direct ratio between them
A pole that is 2.9m tall casts a shadow that is 1.53m long.
2.9/1.53 = 1.9
At the same time, a nearby tower casts a shadow that is 45.25m long
h/45.25 = 1.9
h = 1.9 x 45.25
h = 85.77
Height of tower = 86 metres

From David: The height of the tower works out as 86 meters...
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Thu, 20 Jun 2019 12:32:43 +0000
The height of the tower works out as 86 meters rounded up.

From Krishnamurthy: A pole that is 2.9 m tall casts a shadow that ...
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Thu, 20 Jun 2019 06:07:21 +0000
A pole that is 2.9 m tall casts a shadow that is 1.53 m long.
At the same time, a nearby tower casts a shadow that is 45.25 m long.
t/45.25 = 2.9/1.53
t ≈ 85.768
The tower is 86 meters tall
(Answer rounded to the nearest meter).

From Mike G: 2.9*45.25/1.53 =
85.77 m
Answer 86 m
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Wed, 19 Jun 2019 23:14:32 +0000
2.9*45.25/1.53 =
85.77 m
Answer 86 m

From DWRead: The ratio of height to shadow length is the sa...
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Wed, 19 Jun 2019 23:14:13 +0000
The ratio of height to shadow length is the same for the pole and tower.
x/45.25 = 2.9/1.53
x ≅ 85.76 m

From oldprof: By ratios we have 2.9/1.53 = x/45.25; so that ...
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Wed, 19 Jun 2019 22:15:13 +0000
By ratios we have 2.9/1.53 = x/45.25; so that x = 45.25*(2.9/1.53) = 85.76797386 meters, you can do the rounding. ANS.

From alex: Hint:
They have the same ratio
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Wed, 19 Jun 2019 22:40:17 +0000
Hint:
They have the same ratio

From ?: // Set up a proportion comparing heights to sh...
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Wed, 19 Jun 2019 22:45:50 +0000
// Set up a proportion comparing heights to shadows,
// with x representing the height of the tower.
// Then solve for x.
2.9 cm........x
 = 
1.53m.....45.25m
......(29 cm)(45.25m)
x = 
..............1.53m
x = 857.68cm = 8.58m = 9m (rounded to the nearest meter)......ANS

From Oscar: Hmm.. Ask your local fire department.
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Wed, 19 Jun 2019 22:09:47 +0000
Hmm.. Ask your local fire department.