Class 6 Maths Chapter 6 Perimeter and Area Revision Notes

Quick revision notes for Class 6 Maths Chapter 6, “Perimeter and Area” — formulas and key facts at a glance for fast last-minute review. These Class 6 Mathematics Chapter 6 notes are ideal for quick revision just before exams.

Perimeter Formulas

• Rectangle: 2 × (length + breadth)
• Square: 4 × side
• Regular polygon: number of sides × side length

Area Formulas

• Rectangle: length × breadth
• Square: side × side
• Triangle: ½ × base × height

Estimating Irregular Areas (Grid Method)

• Fully covered square = 1; more-than-half covered = 1; exactly half = ½; less-than-half = ignore (0).

Key Relationship: Perimeter vs Area

• Same perimeter can give different areas — among rectangles with a fixed perimeter, the one closest to a square has the greatest area.
• Same area can give different perimeters — among rectangles with a fixed area, the one closest to a square has the smallest perimeter; the most elongated rectangle has the largest.

Worked Answers Recap

• Area-24 rectangles: smallest perimeter = 4×6 (P=20); largest = 1×24 (P=50).
• Fencing 150m×120m field @ Rs.40/m = Rs.21,600.
• Tiling 500cm×200cm floor @ Rs.8/100sq.cm = Rs.8,000.

Quick revision:

• Revision Notes for Class 6 Maths Chapter 1: Patterns in Mathematics
• Class 6 Maths Chapter 2 Lines and Angles Revision Notes
• Class 6 Maths Chapter 3 Number Play Revision Notes
• Class 6 Maths Chapter 4 Data Handling and Presentation Revision Notes
• Class 6 Maths Chapter 5 Prime Time Revision Notes

Written by Satish

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