• Brainly User

This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
Since the triangle is equilateral, meaning it has equal sides of x, add all the side to get the perimeter.

Perimeter = 30 units
Side = x units

x + x + x = 30
3x = 30

3x/3 = 30/3

x = 10 units

Therefore, each side has a length of 10 units.