Question

the aera of eqilateral triangle is numerically equal to irs perimeter .find its permeter correct to 2 decimal place

Answer 1

given area of equilateral triangle=it's perimeter
$\frac{ \sqrt{3} }{4} \times {a}^{2} = 3a$
√3a=12
a=12/√3
so perimeter=3a=3(12/√3)
=12(√3)
=12×1.732
=20.784
=20.78units..
hope it'll help
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