The perimeter that an it is intended triangle is the full length of its boundary. In geometry, an it is provided triangle is a triangle in which all 3 sides space equal. The complete length that the boundary of a triangle have the right to be calculated by adding the size of every its sides. In this article, we will certainly learn just how to calculate the perimeter of an it is provided triangle and its formula through the help of resolved examples.

You are watching: How to find the perimeter of a equilateral triangle

1. | What is the Perimeter of it is intended Triangle? |

1. | Formula because that the Perimeter of equilateral Triangle |

2. | How to discover the Perimeter of an it is intended Triangle? |

3. | FAQs on Perimeter of it is intended Triangle |

## What is the Perimeter that an it is intended Triangle?

The perimeter of an equilateral triangle is the amount of its 3 sides. A triangle is taken into consideration to it is in equilateral if it has actually the following straightforward properties:

All three sides are equal.All 3 angles are equal come 60°In the number given below, the sides of the triangle PQR room equal, i.e., PQ = QR = RP. In addition to this, the angle of the triangle are likewise equal. Therefore, this is an equilateral triangle. Now, the perimeter of an it is intended triangle = 3a** **(where a is the side of an it is intended triangle)

## Formula because that the Perimeter of equilateral Triangle

The simple formula the is used to calculation the perimeter the an it is provided triangle is: **P = 3a**, whereby 'a' to represent one side of the triangle. Due to the fact that all the 3 sides that an equilateral triangle room equal, the sum becomes a + a + a = 3a.

A few other formulas related to the it is provided triangle are as follows:

Sometimes, when the political parties of an it is intended triangle space given, we need to discover its height, climate we usage the formula:**Height the an it is provided Triangle = √3a/ 2**In a couple of cases, we need to uncover the semi-perimeter of an equilateral triangle. Semi perimeter is half the perimeter and is calculation by the formula,

**Semi perimeter =**

**(a + a + a)/2 = 3a/2**

## How to discover the Perimeter of an it is intended Triangle?

We recognize that the formula because that the perimeter that an it is intended triangle is 3a, where a = side of an equilateral triangle. Now, let united state learn just how to apply the formula because that the perimeter of an it is intended triangle.

**Example: find the perimeter and semi perimeter that an it is intended triangle v side 9 units.**

**Solution: **

Given: side of it is provided triangle = a = 9 units. The perimeter of an it is intended triangle = 3a. Substituting the value of a = 9 in the formula = 3 × 9 = 27 units

Semi-Perimeter the an it is intended triangle = 3a/2. Substituting the value of a = 9 in the formula = (3 × 9)/2 = 27/2 = 13.5 units

**Note:** Semi-Perimeter that an it is provided triangle is fifty percent of the perimeter the an equilateral triangle

## Perimeter of it is provided Triangle as soon as Area is Given

The perimeter of an it is provided triangle have the right to be calculation if we understand the area that the triangle. In this case, we first need to discover the length of the sides with the assist of which the perimeter have the right to be calculated.

**Example:** If the area of an it is provided triangle is 56 square units, let us uncover its perimeter.

**Solution: **We know that Area the an it is intended triangle = a2√3/4. So, the side can be calculation by substituting the value of area in the formula.

Area = a2√3/4

56 = a2√3/4

a2 = (56 × 4)/√3

a = 11.37 units

Now, the perimeter that the it is intended triangle deserve to be calculated, p = 3a = 3 × 11.37 = 34.11 units.

## Perimeter of it is provided Triangle as soon as Altitude is Given

The perimeter of an equilateral deserve to be calculated once the altitude (height) the the triangle is given. In this case, we can uncover the side size of the triangle v the aid of the formula: **Height the an equilateral Triangle = √3a/ 2. **After finding the next length, the perimeter the the it is intended triangle have the right to be quickly calculated.

**Example: **If the elevation of an it is provided triangle is provided as 6 units, uncover its perimeter.

**Solution: **We know that the formula for the elevation of an it is provided triangle = **√**3a/ 2. So, the next length have the right to be calculated by** **substituting the worth of height in the formula.

Height = **√**3a/ 2

6 = **√**3a/ 2

a = (6 × 2)/**√**3

a = 6.92 units

Now, the perimeter the the equilateral triangle can be calculated, p = 3a = 3 × 6.92 = 20.76 units.

**Related write-ups on Perimeter of it is intended Triangle**

Check out these interesting short articles to know more about the perimeter that an it is provided triangle and its related topics.

**Example 2: What is the perimeter the an it is provided triangle with each next measuring 30 inches. Have the right to you discover the elevation of this it is intended triangle? **

**Solution: **

Using the formula because that the perimeter of it is provided triangle = 3a, whereby a is the side. Offered a = 30 inches. Thus, the perimeter of the it is intended triangle = 3 × 30 = 90 inches, and also the height of the equilateral triangle = √3a/2. Therefore, the height of the it is intended triangle is = (√3 × 30)/2 = 15√3 inches.

See more: What Does Epc Stand For Vw Golf, Jetta & Other Models? How To Fix The Epc Light On A Volkswagen

**Example 3: What room the perimeter and semi perimeter that an it is intended triangle through side measurement together 12 units. **

**Solution: **

Perimeter of it is intended triangle = 3a and also semi-perimeter of an it is provided triangle = 3a/ 2, wherein a is the side. Given a = 12 units. Therefore, the perimeter of it is intended triangle = 3 × 12 = 36 units and also Semi-perimeter that an equilateral triangle = 36/2 = 18 units.