Each equal side of an equilateral triangle is 12 cm . Find its area and its artitude.

We have,length of the side of an equilateral  = a = 12 cmArea of equilateral  = 34a2 = 34 × 12 × 12 = 363 cm2Now, length of the altitude = 3a2 = 32 × 363 = 1082 = 54 cm

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