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Perimeter
1. The perimeter is the total
distance around the outside
of a 2D shape. You calculate
it by adding together all the
lengths of a shape.
2. How To Calculate The
Perimeter Of A Rectangle
Because 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
12cm
The perimeter = 12cm +5cm+12cm+5cm
= 34cm
