Table of Contents
Class 6 Maths Mensuration Perimeter of a Square and a Triangle
Table of Contents
- Perimeter of a Square
- Perimeter of a Triangle
- Summary
- What’s Next?
In our previous segment of Class 6 Maths, we learnt about The Perimeter of a rectangle. In this segment, under the use of variables in common rules, we will learn about the Perimeter of a square and a triangle.
What is the Perimeter of a square?
The total sum of the lengths of the sides of a square gives us its perimeter.
Consider a square with a side of length ‘S’. As all sides of the square are equal, each side of the square will be S.
Thus, the perimeter of the square = S + S + S + S
= 4S
So, the Perimeter of the square is 4S, that is, 4 times the length of a side of the square. For example,
If the side of a square is 7 cm, then its perimeter is given by,
Perimeter of the square = 4S
= 4 x 7
= 28 cm.
So, the perimeter of the square is 28 cm.
What is the Perimeter of a triangle?
The Perimeter of a triangle is the total length around the triangle.
Consider a triangle with sides of lengths ‘a’, ‘b’, and ‘c’.
Thus, the perimeter of the triangle = a + b + c.
For example,
If the sides of a triangle are 13 cm, 10 cm, and 5 cm, then its perimeter is given by, Perimeter of the triangle = a + b + c
= 13 + 10 + 5
= 28 cm.
So, the perimeter of the triangle is 28 cm.
Summary
| Perimeter of a Square | 4 x side, that is, 4S |
| Perimeter of a Triangle | Sum of all sides |
What’s next?
In our next segment of Class 6 Maths, we shall deal with the Commutative property of whole numbers.
