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Dafna11 [192]
3 years ago
8

Ummm plz help I dont know ​

Mathematics
2 answers:
ExtremeBDS [4]3 years ago
4 0
Answer: 0.18

I rounded so if it’s not that it’s 0.17777777777


Explanation: I used Calculator and rounded to get my answer
Hope this is what your looking for!
SVETLANKA909090 [29]3 years ago
3 0

Answer:

8/45

Step-by-step explanation:

1x8 is 8 and 5x9 is 45

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. Find the area of the regular dodecagon inscribed in a circle if one vertex is at (3, 0).
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Answer:

Area of the regular dodecagon inscribed in a circle will be 27 square units.

Step-by-step explanation:

A regular dodecagon is the structure has twelve sides and 12 isosceles triangles inscribed in a circle as shown in the figure attached.

Since angle formed at the center by a polygon = \frac{360}{n}

Therefore, angle at the center of a dodecagon = \frac{360}{12} = 30°

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Now area of a small triangle = \frac{1}{2}.(a).(b).sin\theta

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Now area of the small triangle = \frac{1}{2}.(3).(3).sin30

= \frac{9}{4}

Area of dodecagon = 12×area of the small triangle

= 12×\frac{9}{4}

= 27 unit²

Therefore, area of the regular octagon is 27 square unit.

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3 years ago
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