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A sector of a circle has a central angle of 120°. If the cir
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19 Sep 2018, 17:46
19 Sep 2018, 17:46
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A sector of a circle has a central angle of 120°. If the circle has a diameter of 12, what is the area of the sector?
(A) \(4\pi\)
(B) \(8\pi\)
(C) \(12\pi\)
(D) \(18\pi\)
(E) \(36\pi\)
(A) \(4\pi\)
(B) \(8\pi\)
(C) \(12\pi\)
(D) \(18\pi\)
(E) \(36\pi\)
Re: A sector of a circle has a central angle of 120°. If the cir
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13 Apr 2020, 04:28
13 Apr 2020, 04:28
1
diameter= 12 --> radius = 6
Area of sector = (angle/360)Pi.(radius)^2
(120/360).pi.(6)^2
(1/3).pi.36
12pi
Hence, C is the Answer
Formula reference:
https://www.mathopenref.com/arcsectorarea.html
Area of sector = (angle/360)Pi.(radius)^2
(120/360).pi.(6)^2
(1/3).pi.36
12pi
Hence, C is the Answer
Formula reference:
https://www.mathopenref.com/arcsectorarea.html
gmatclubot
Re: A sector of a circle has a central angle of 120°. If the cir [#permalink]
13 Apr 2020, 04:28
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