Question

the area of an equilateral triangle is 173.2 m square . find the perimeter

Answer 1

perimeter of equilateral triangle = a+b+c
let a,b,c be x
 x+x+x = P
x+x+x = 173.2
3 x = 173.2
x = 173.2/3
x = 57.733 
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Answer 2

It's obvious that all sides of
equilateral triangle are equal.
So
Perimeter of equilateral triangle= 3× side
3×side=173.2m
side=57.73m (approx.)
So
Area= side×side
57.73×57.73
=3332.75 (approx.)

Hope this helps you