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What is the area of the equilateral triangle if the base BC

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What is the area of the equilateral triangle if the base BC [#permalink] New post 15 Oct 2018, 03:26
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What is the area of the equilateral triangle if the base BC = 6?

(A) \(9 \sqrt{3}\)

(B) \(18 \sqrt{3}\)

(C) \(26 \sqrt{3}\)

(D) \(30 \sqrt{3}\)

(E) \(36 \sqrt{3}\)
[Reveal] Spoiler: OA

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Re: What is the area of the equilateral triangle if the base BC [#permalink] New post 09 Jan 2019, 07:18
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For equilateral triangle area= \(\sqrt{3}/4*a^2\) where a = side
Here, \(\sqrt{3}/4*6^2\)
=\(9 \sqrt{3}\)
Re: What is the area of the equilateral triangle if the base BC   [#permalink] 09 Jan 2019, 07:18
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What is the area of the equilateral triangle if the base BC

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