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Perimeter  Adult Numeracy  Level 2
Perimeter  At level 2 you need to understand and use given formulae for finding perimeters of regular shapes. (e.g. rectangular and circular surfaces)
Skills required ,[object Object],[object Object],[object Object]
All the way round the edge . All the way round the edge . All the way round the edge. All the way round the edge. perimeter
Perimeter  To find the perimeter of an object or shape add the lengths of all the sides.
Perimeter 3m 3m L W 2m 3m P = L + W + L + W = 2L + 2W Perimeter = Length + Width + Length + Width
Calculate the distance round a playground of length 85m and breadth 68m. A  5786m B  306m ² C  0.306km D  300m Example question P = 2L + 2W = (2 x 85) + (2 x 68)m = 170 + 136m = 306m = 0. 306km
[object Object],[object Object],[object Object],[object Object],[object Object],Example question P = 2L + 2W = (2 x 6.25) + (2 x 4.5)m = 12.5 + 9m = 21.5m = 22m to the nearest metre
Example question How many 2-metre-long fence panels are needed to go round the site? A  7 B  13 C  18 D  26 4m 2m 6m Length of fence = 2( 6 + 4 + 2) + 2 = 26m Number of panels = 26  ÷ 2 = 13
circumference  = 2 x pi x radius radius (r) diameter (d) c = 2 π r =  π d circumference π   = 3.14
Circumference 2.5m 3m How much edging is needed to go round the shrub and paving sections of the garden? shrubs lawn paving c =  π d = 3 x 2.5 = 7.5m c =  π d = 3 x 3 = 9m Total length = 7.5 + 9 = 16.5m
Formulae W L P = 2L + 2W diameter (d) c =  π  d  π   = 3.14  often rounded to 3

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Perimeter 1

  • 1. Perimeter Adult Numeracy Level 2
  • 2. Perimeter At level 2 you need to understand and use given formulae for finding perimeters of regular shapes. (e.g. rectangular and circular surfaces)
  • 3.
  • 4. All the way round the edge . All the way round the edge . All the way round the edge. All the way round the edge. perimeter
  • 5. Perimeter To find the perimeter of an object or shape add the lengths of all the sides.
  • 6. Perimeter 3m 3m L W 2m 3m P = L + W + L + W = 2L + 2W Perimeter = Length + Width + Length + Width
  • 7. Calculate the distance round a playground of length 85m and breadth 68m. A 5786m B 306m ² C 0.306km D 300m Example question P = 2L + 2W = (2 x 85) + (2 x 68)m = 170 + 136m = 306m = 0. 306km
  • 8.
  • 9. Example question How many 2-metre-long fence panels are needed to go round the site? A 7 B 13 C 18 D 26 4m 2m 6m Length of fence = 2( 6 + 4 + 2) + 2 = 26m Number of panels = 26 ÷ 2 = 13
  • 10. circumference = 2 x pi x radius radius (r) diameter (d) c = 2 π r = π d circumference π = 3.14
  • 11. Circumference 2.5m 3m How much edging is needed to go round the shrub and paving sections of the garden? shrubs lawn paving c = π d = 3 x 2.5 = 7.5m c = π d = 3 x 3 = 9m Total length = 7.5 + 9 = 16.5m
  • 12. Formulae W L P = 2L + 2W diameter (d) c = π d π = 3.14 often rounded to 3