Class 6 · Chapter 6
Perimeter and Area
Measure the boundary and surface of 2D shapes.
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Ganita Prakash · Class 6 (2026-27)
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Tip: NCERT updated the syllabus for 2026-27. The links above open the latest edition on the official portal — chapter titles and numbering may differ from the notes shown here.
Detailed theory
Sum all outer side lengths. Circle circumference: .
Key concepts & formulas
01
**Perimeter**: distance around a shape.
02
Rectangle: ; Square: .
03
**Area**: space enclosed; Rectangle ; Square .
04
Triangle: .
05
Perimeter in units, area in square units.