CBSE Class 8 Answered
The perimeter of an equilateral triangle is 18 cm. What is the length of a side?
Equilateral triangles are those which have all the sides of equal measure. It means 3 equal sides. Let s be the side of the triangle.
Here, perimeter = 18 cm
So, Perimeter = 3 x s
18 = 3s [swap both sides]
3s = 18 s = = 6
Hence, the length of each side of the triangle is 6 cm.