The area of an equilateral triangle with a side of 12 cm is:


Answer:

363 cm2

Step by Step Explanation:
  1. As per Heron's formula, the area of a triangle with sides a, b and c and perimeter 2S = S(Sa)(Sb)(Sc)
  2. Here, a = b = c = 12 and S =  
    3
    2
      × a = 18.
  3. Therefore, Area = 18×(1812)×(1812)×(1812)
    ⇒ Area = (18×6×6×6)
    ⇒ Area = 363 cm2

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