Zusammenfassung der Ressource
Perimeter and Area of 2D shapes
- Perimeter
- You add up the lengths of all the sides
- Given in cm, m, mm or whatever unit the question says.
- Area
- Rectangle
- bh
- triangle
- 1/2bh
- Parallelogram
- bh
- Trapezium
- (a+b)h
- Given in squared units.
- For compound shapes, split it up
into different shapes and work
them out separately, but don't
forget to add them together!