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JSS1: MATHEMATICS - 2ND TERM

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  1. Algebraic Processes | Week 1
    4 Topics
    |
    1 Quiz
  2. Simplification of Algebraic Expressions | Week 2
    4 Topics
    |
    1 Quiz
  3. Simplification of Algebraic Expressions 2 (Use of Brackets) | Week 3
    4 Topics
    |
    1 Quiz
  4. Simple Equations | Week 4
    1 Topic
    |
    1 Quiz
  5. Simple Equations II | Week 5
    3 Topics
    |
    1 Quiz
  6. Plane Shapes I | Week 6
    5 Topics
    |
    2 Quizzes
  7. Plane Shapes II | Week 7
    7 Topics
    |
    1 Quiz
  8. Plane Shapes III | Week 8
    7 Topics
    |
    1 Quiz
  9. Decimals and Percentages I | Week 9
    2 Topics
    |
    1 Quiz
  10. Decimals and Percentages II | Week 10
    3 Topics
    |
    1 Quiz



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Topic Content:

  • Perimeter of a Rectangle

The longer side of a rectangle is usually called the length, and the shorter side is the breadth.

length = l
breadth = b

perimeter of rectangle

Perimeter of rectangle = \( \scriptsize l \: + \: b \: + \: l \: + \: b \\ = \scriptsize l \: + \: l \: + \: b \: + \: b \\ = \scriptsize 2l \: + \: 2b \\ = \scriptsize 2(l \: + \: b) \)

Perimeter of a Rectangle   =   2l  +   2b

Where  l  =  Length
b =  breadth

breadth (b) is also known as width (w)

Example 7.3.1: 

The length of a rectangular room is 8 m, and the width (breadth) is 6 m. Find the perimeter of the room.

Solution:

Length of the room, l = 8 m

 

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