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The area of the equilateral triangle is 20√3 cm². Find the length of the side. |
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Answer» AREA of equilateral triangle = root3 a^2 / 4 => 20 root3 = root3 a^2 / 4 => 80 root3 / root3 = a^2 => a^2 = 80 => a = 5 × 16 => a = 4 ROOT5 Side of triangle = 4 root5 cm |
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