Question

4.2 perimeter of quadrilaterals and triangles
the perimeter of an equilateral triangle is 54 cm. find the length of each side of the triangle.
hint: an equilateral triangle has 3 equal sides.

Explanation:

Step1: Recall perimeter formula

Perimeter of equilateral triangle $P = 3s$, where $s$ is side - length.

Step2: Solve for side - length

Given $P = 54$ cm, then $s=\frac{P}{3}$. Substitute $P = 54$ into the formula: $s=\frac{54}{3}$.

Step3: Calculate the value

$\frac{54}{3}=18$ cm.

Answer:

18