The area of an equilateral triangle is 9root3cm. square.Its perimeter is i] 6cm ii] 18cm iii]12cm iv]3root3cm
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area of an equilateral triangle = 9√3cm²
=> √3/4 a²
= 9√3 =>a ²
= 36 =>a = 6
perimeter of equilateral triangle = 3a = 3 × 6 = 18cm
=> √3/4 a²
= 9√3 =>a ²
= 36 =>a = 6
perimeter of equilateral triangle = 3a = 3 × 6 = 18cm
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