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The length of each side of an equilateral triangle having an area of 9√3 cm2 isA. 8 cmB. 36 cmC. 4 cmD. 6 cm |
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Answer» D. 6 cm Given, area of an equilateral triangle = 9√3 cm2 ∴ Area of an equilateral triangle = √3/4(Side)2 => √3/4 (Side)2 = 9√3 => (Side)2 = 36 ∴ Side = 6 cm [taking positive square root because side is always positive] Hence, the length of an equilateral triangle is 6 cm. |
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