The area of an equilateral triangle is 144 /3 cm2 find its perimeter
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Answer: please find the attached file.
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Answer:
31.2cm
Step-by-step explanation:
ar(equilateral triangle)=144/3cm^2
square root of 3a^2/4=144/3
a^2=64*1.732
a=10.4cm
perimeter of a triangle= sum of all sides
since the triangle is equilateral all the sides are equal.
therefore,
perimeter of equilateral = 3*a
ie., =3*10.4
=31.2cm
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