**Perimeter of a triangle :**

Here we are going to see example problems to find the perimeter of triangle.

Formula:

Let a, b and c is the sides of the triangle. Then the perimeter

**P = a + b + c**

Now let us see some example problems to understand this concept much better.

**Example 1:**

The sides of a triangle are 12 cm, 6 cm and 8 cm.find the perimeter of the triangle.

**Solution : **

Let a, b and c are the three sides of the triangle

a = 12 cm, b = 6 cm and c = 8 cm

Perimeter P = 12 + 6 + 8

= 26 cm

Hence, the perimeter of a required triangle is 26 cm

**Example 2 : **

The sides of a triangle are 5 cm; 7 cm and 9 cm find the perimeter of the triangle.

**Solution :**

Let a, b and c are the three sides of the triangle

a = 5 cm, b = 7 cm and c = 9 cm

Perimeter P = 5 + 7 + 9

= 21 cm

Therefore the perimeter of a required triangle = 21 cm**Example 3 :**

The sides of a triangle are in the ratio 2x, 3x and 5x. If the
perimeter of the triangle is 100 then find the measurement of three
sides.

**Solution :**

Let a, b and c be the three sides of the triangle

a = 2x, b = 3x and c = 5x

Perimeter P = 2x + 3x + 5x = 10 x

Perimeter of triangle = 100 cm

10 x =100

x = 100/10

x = 10 cm

Therefore a = 2x = 2(10) = 20 cm

b = 3x = 3(10) = 30 cm

c = 5x = 5(10) = 50 cm

- Length of arc
- Practice questions on length of arc
- Perimeter of Sector
- Perimeter of square
- Perimeter of parallelogram
- Perimeter of rectangle
- Area of a circle
- Area of Semicircle
- Area of Quadrant
- Area of sector
- Area of triangle
- Area of equilateral triangle
- Area of scalene triangle
- Area of square
- Area of rectangle
- Area of parallelogram
- Area of rhombus
- Area of trapezium
- Area of quadrilateral
- Area around circle
- Area of pathways
- Area of combined shapes

After having gone through the stuff given above, we hope that the students would have understood "Area of a triangle"

Apart from the stuff given above,
if you want to know more about "Area of a triangle", __please click here.__

Apart from the stuff given in this section, if you need any other stuff in math, please use our google custom search here.

HTML Comment Box is loading comments...

You can also visit our following web pages on different stuff in math.

**WORD PROBLEMS**

**Word problems on simple equations **

**Word problems on linear equations **

**Word problems on quadratic equations**

**Area and perimeter word problems**

**Word problems on direct variation and inverse variation **

**Word problems on comparing rates**

**Converting customary units word problems **

**Converting metric units word problems**

**Word problems on simple interest**

**Word problems on compound interest**

**Word problems on types of angles **

**Complementary and supplementary angles word problems**

**Trigonometry word problems**

**Markup and markdown word problems **

**Word problems on mixed fractrions**

**One step equation word problems**

**Linear inequalities word problems**

**Ratio and proportion word problems**

**Word problems on sets and venn diagrams**

**Pythagorean theorem word problems**

**Percent of a number word problems**

**Word problems on constant speed**

**Word problems on average speed **

**Word problems on sum of the angles of a triangle is 180 degree**

**OTHER TOPICS **

**Time, speed and distance shortcuts**

**Ratio and proportion shortcuts**

**Domain and range of rational functions**

**Domain and range of rational functions with holes**

**Graphing rational functions with holes**

**Converting repeating decimals in to fractions**

**Decimal representation of rational numbers**

**Finding square root using long division**

**L.C.M method to solve time and work problems**

**Translating the word problems in to algebraic expressions**

**Remainder when 2 power 256 is divided by 17**

**Remainder when 17 power 23 is divided by 16**

**Sum of all three digit numbers divisible by 6**

**Sum of all three digit numbers divisible by 7**

**Sum of all three digit numbers divisible by 8**

**Sum of all three digit numbers formed using 1, 3, 4**

**Sum of all three four digit numbers formed with non zero digits**