Question

The perimeter of an equilateral is 72 m.Find its area​

Answer 1

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Answer 2

Perimeter of equilateral triangle =3×side

60=3×sides

Side=20 cm

Area of equilateral triangle = $\frac{\sqrt{3}}{ 4} ×(side)²$

$= \frac{\sqrt{3} }{4}×20×20$

$=100 \sqrt{3} \: cm²$