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Bas_tet [7]
3 years ago
5

Two poles, A and B, are 12 meters apart. Pole A is 5 meters high. A rope 20 meters long is tied to the top of pole A and stretch

es to the top of pole B. What is the height of pole B? Assume that pole B is taller than pole A.
Hint: Use the Pythagorean theorem to find the value of x.
A.
19
B.
20
C.
21
D.
13
E.
15
Mathematics
1 answer:
stepan [7]3 years ago
5 0
The answer should be C, 21. I’ll attach a picture for explanation.
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Answer:

<u>The perimeter of the square is option E. 16√5 mm.</u>

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Step-by-step explanation:

1. Let's calculate the perimeter of this square:

The perimeter of a square is the sum of its side 4 times, thus:

Perimeter = 4√5 + 4√5 + 4√5 + 4√5

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<u>Perimeter = 4 * 4√5 = 16√5</u>

<u>The correct answer is option E. 16√5 mm</u>

2. Let's calculate the area of this square:

The area of a square is the length of its side squared, thus:

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Area = 4√5 * 4√5

Area = (4 * 4 * √5 * √5)

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Step-by-step explanation:

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