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प्रश्न
Find the area of an equilateral triangle having each side x cm.
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उत्तर
Area of an equilateral triangle, say A having each side a cm is given by
`A = sqrt(3)/4 a^2`
Area of the given equilateral triangle having each equal side equal to x cm is given by
a = x cm
`A = sqrt(3)/4 (x)^2`
`A= (sqrt(3)x^2)/4 cm^2`
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