Q13 of 69 Page 240

The area of an equilateral triangle is cm2. Its perimeter is –

It is given in the question that,

Area of an equilateral triangle = 36 cm2


We know that,


Area of an equilateral triangle =


36 =


(Side)2 =


Side = 12 cm


∴ Perimeter of equilateral triangle = 3 × Side


= 3 × 12


= 36 cm


Hence, option (a) is correct

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