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The perimeter of an equilateral triangle is 40 cm more than the length of each of its sides. What is the length of each side of this equilateral triangle?(in cm)
Let's assume the length of each side of the equilateral triangle is 'a'.
The perimeter of an equilateral triangle is 40 cm more than the length of each of its sides.
the perimeter of an equilateral triangle = 40 + a
3a = 40 + a
3a-a = 40
2a = 40
Length of each side of this equilateral triangle = a = 20 cm
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