Question

Find the perimetre of an equilateral triangle of side 13.5 cm.?

Answer 1

perimeter of equilateral triangle = 3×side






=3×13.5 cm



=40.5 cm

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Answer 2

Since it is an equilateral triangle, all the sides would be equal.
So each side of triangle = 13.5 cm

As we know,
Perimeter of any triangle = a + b + c, where a, b and c denotes the three sides of the triangle.

Perimeter of equilateral triangle = 13.5 + 13.5 + 13.5 = 3 * 13.5 = 40.5 m

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