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17. Perimeter and Area of Plane Figures
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Q11 of 97 Page 786

The area of an equilateral triangle is 4√3 cm2. Its perimeter is

Given:


 


Area of equilateral triangle = 4√3 cm2


 



 


We know that,


 


Area of equilateral triangle =


 



 



 


⇒ side2 = 4 × 4


 


⇒ side2 = 16


 


⇒ side = 4 cm


 


Now,


 


Perimeter of triangle = 3 × side


 


= 3 × 4 cm


 


= 12 cm

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17. Perimeter and Area of Plane Figures
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