Answer:
15 cm
Step-by-step explanation:
The area of an equilateral triangle is:
, where a is the length of one side.
We can find the value of a (the length) by:


a = 5, so the side length of this triangle is 5 cm.
The perimeter of an equilateral triangle will be 3 times the length.

Hope this helped!
Answer:
Step-by-step explanation:
Linear means strait but what are you asking ?
Answer:
idk sry
Step-by-step explanation:
sry