CBSE Class 7 Maths Notes for Chapter 10-Perimeter and Area

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PERIMETER
 
1. Square= 4 x side
2. Rectangle= 2 x (length + breadth)
3. Parallelogram and triangle= sum of the sides
4. Circle= 2 x π x radius
 
AREA
 
1. Square= side x side
2. Rectangle= length x breadth
3. Parallelogram= base x height
4. Triangle=  x base x height
5. Circle= π x (radius)2