Question

the side of an equilateral triangle whose perimeter 12.81 is ________ cm
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Answer 1

Answer:

$perimeter = 3l \\ 12.81 = 3l \\ l = \frac{12.81}{3} \\ \\ l = 4.27cm$

the side of an equilateral triangle whose perimeter 12.81 is 4.27 cm