Question

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

Answer 1

Answer:

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

Step-by-step explanation:

$P=3$

$a=3$ · $9.9$ ≈ $29.7cm$

$P=29.7cm$

Answer 2

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) .