Question

the side of an equilateral triangle is 3.5 cm find its perimeter​

Answer 1

in an equilateral triangle , 3 sides are equal.perimeter = 3(length of each side)

=3(3.5)

=10.5

therefore perimeter = 10.5 cm

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Answer 2

Answer:

10.5 is the correct answer.

Step-by-step explanation:

perimeter of an equilateral triangle =3 ×side

=3×3.5 =10.5

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