Question

find the side of equilateral triangle whose perimeter is 54 cm

Answer 1

Side = perimeter /3 = 54 cm /3 = 18 cm

Answer 2

Answer:

Perimeter of an Triangle is sum of all the three sides.

In the case of Equilateral triangle, all the three sides are equal.

Let us assume the side to be 'a' units in length.

Then, Perimeter would be:

⇒ a + a + a = 54 cm

⇒ 3a = 54 cm

⇒ a = 54 / 3 cm

⇒ a = 18 cm

Hence the length of each side is 18 cm.