The side of an equilateral triangle is given as a. Find the perimeter of the equilateral triangle using a.
Answer:
3a
- The perimeter of a shape (polygon) is equal to the sum of length of all its sides.
- A triangle has 3 sides and in the case of an equilateral triangle, all sides are of equal length.
- Therefore, the perimeter is equal to three times the length of a side.
= 3 × a
= 3a