Question

25) If area of an quilateral triangle is 81√3 cm. Find its side.​

Answer 1

Answer:

side of equilateral triangle is 18cm

Step-by-step explanation:

$area \: of \: equilateral \: triangle = \frac{ \sqrt{3} {a}^{2} }{4}$

81√3=(√3/4)a^2

81×4=a^2

a=18 cm

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