Question

Each side of an equilateral triangle measure 12cm then the semi perimeter (S) of the triangle =_______cm​

Answer 1

Answer:

Step-by-step explanation:

The perimeter of the traingle is 36 cm

If you want half the perimeter than the 18cm

if This is what you mean this is the correct answer

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Answer 2

Side = 12cm

semi - perimeter of equilateral triangle = side + side + side/2

= 12 + 12 + 12/2 = 36/2 = 18cm

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