Question

The perimeter of an equilateral triangle is 18 cm. Find the length of its each side. ​

Answer 1

Answer:

each side in equilateral triangle is equal.

let each side = x

18 = 3x

x = 18/3

x  = 6cm

therefore, each side is 6 cm

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Answer 2

Let the side of square =a
Perimeter= sum of all sides
18=a+a+a
18=3a
a=18/3
a=6
Hence , each side = a= 6unit