U9: Area and Perimeter

Key Learning Points:

• Perimeter = Add up all the exposed sides
  
• Area of Rectangle = Length x Breadth
  
• Area of a Square = Length x Length
  
• Area of a Triangle = 1/2 x Base x Perpendicular Height
  
• Area of a Circle = 'pi' x radius x radius
  
• Break up the irregular figure into shapes which you are familiar with.
  
• Fill up the missing dimensions.
  
• Apply the respective area formulae.
  
• Add up or subtract the areas (depending on the questions)

Do be familiar with your multiplication table:

• 1 x 1 = 1
• 2 x 2 = 4
• 3 x 3 = 9
• 4 x 4 =16
• 5 x 5 = 25
• 6 x 6 = 36
• 7 x 7 = 49
• 8 x 8 = 64
• 9 x 9 = 81
• 10 x 10 = 100
• 11 x 11 = 121
• 12 x 12 = 144