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Find the area of an equilateral triangle having each side 4 cm.

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#### Solution

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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