Question

the perimeter of equilateral triangle is 60 degree find the area​

Answer 1

let side of equilateral traingle is a

here...

perimeter=sum of all sides.

60=a+a+a

$3a = 60 \\ a = \frac{60}{3} \\ a = 20$

Area of eqilateral traingle=

$\frac{ \sqrt{3} a^2}{4}$

$= \frac{ 20×20\sqrt{3} }{4} \\ = 5×20\sqrt{3}$

Area is

$100 \sqrt{3} \: sq. \: unit$

Thanks

hope it helps you

please mark the answer as Brainliest .