(b) 4 cm
Because,
From the question is given that,
Area of an equilateral triangle is (4√3) cm2
Area of the equilateral triangle = ((√3)/4) × (sides)2 sq. Units
= (4√3) = ((√3)/4) × (sides)2
= (sides)2 = (4√3)/ (4/(√3)
= (sides)2 = (4√3 × 4)/ √3
= (sides)2 = 4 × 4
= Sides = √16
= Sides = 4 cm
Hence, the length of each side of the triangle is 4 cm.