Question

The side of a equilatoral triangle is 9.9 cm. find its perimetre

Answer 1

The perimeter is the distance all the way around.

That's the sum of all the sides.

A triangle has 3 sides.

In an equilateral triangle, they're all the same length.

If one of them is 9.9 cm, then all of them add up to (3) · (9.9 cm) .

Answer 2

The perimeter of the equilateral triangle is =
`29.7cm`

Explanation:

`P=3`

`a=3` ·
`9.9` ≈
`29.7cm`

`P=29.7cm`