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प्रश्न
Find the area of an equilateral triangle having each side 4 cm.
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उत्तर
Area of an equilateral triangle having each side a cm is given by
`A=sqrt(3)/4a^2`
Area of the given equilateral triangle having each equal side equal to 4 cm is given by
a = 4 cm
`A= sqrt(3)/4 (4)^2`
`A=sqrt(3)/4 xx 16`
`A = 4 sqrt(3) cm^2`
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