Answer :

It is given that,

Each side of an equilateral triangle, a = 8 cm


We know that,


Area of equilateral triangle =


=


= × 64


=


= 16 cm2


Also,


Area of triangle =


16 = × a × Altitude



Altitude =


= 4 cm


Hence, altitude of the triangle is 4 cm


Thus, option (c) is correct

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