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About Perimeter

Published in: Education
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  1. 1. The perimeter is the totaldistance around the outsideof a 2D shape. You calculateit by adding together all thelengths of a shape.
  2. 2. How To Calculate ThePerimeter Of A RectangleBecause a rectangle is a shape that has two pairs of equal parallel sides there are several other ways to work this out:- You could add 5cm and 12cm then multiply bay 2 or- You could multiply 5cm by 2 and multiply 12cm by 2 then add the totals. 12cm 5cm 5cm 12cmThe perimeter = 12cm +5cm+12cm+5cm = 34cm
  3. 3. Have a Go : Level 1 5cm 30cm 30cm 5cm answer =
  4. 4. 15cm 13 cm