Perimeter and area
Perimeter
The perimeter is the total distance all the way around the outside of a 2D shape.
The units for perimeter are:
- \(mm\) (millimetre)
- \(cm\) (centimetre)
- \(m\) (metre)
- \(km\) (kilometre)
Example:
Perimeter = \(3cm\) + \(4cm\) + \(5cm\) + \(2cm\) + \(8cm\) = \(22cm\)
Area
The area of a 2D shape is the amount of surface it covers.
The units for area are:
- \(mm^{2}\) (square millimetre)
- \(cm^{2}\) (square centimetres)
- \(m^{2}\) (square metre)
- \(km^{2}\) (square kilometre)
Example
Area = 24 squares
Area = \(24cm^{2}\) (24 square centimetres)
