find the area of an equilateral triangle whose length of its side is 12cm
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Answer: 36√2 cm²
Step-by-step explanation:
Area of an equilateral triangle is given by
a derived formula : √3/4 × a²
where 'a' is the side of the triangle
a = 12 cm
a² = 144
area = √3/4 × 144
=> √3 × 36
= 36√3 cm²
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