MA23-01 Maths Watch
Perimeter of 2D and composite shapes
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In this lesson
In this video you'll learn about perimeter of 2D and composite shapes for GCSE Maths, with worked examples and the mistakes examiners report. By the end you'll be able to calculate the perimeter of rectilinear and composite 2D shapes, including shapes where part of the boundary is a circular arc.
What it covers
- 0:27 Perimeter of 2D and composite shapes: walking the edge of a garden
- 2:16 Take a garden path shaped like the letter L
- 3:30 Take a running track shaped like a rectangle with a semicircular end on each side
Key words
For: AQA GCSE 8300, Cambridge IGCSE 0580, Edexcel GCSE 1MA1, Edexcel IGCSE 4MA1, Eduqas GCSE C300, OCR GCSE J560
On the specification
| Board | Spec | Statement |
|---|---|---|
| AQA GCSE 8300 | G17 | Know the formulae: circumference of a circle = 2πr = πd |
| Cambridge IGCSE 0580 | C5.2 | Carry out calculations involving the perimeter and area of a rectangle, triangle, parallelogram and trapezium. |
| Cambridge IGCSE 0580 | E5.2 | Carry out calculations involving the perimeter and area of a rectangle, triangle, parallelogram and trapezium. |
| Edexcel GCSE 1MA1 | G17 | Know the formulae: circumference of a circle = 2πr = πd, area of a circle = πr²; calculate: perimeters of 2D shapes, including circles; areas of circles and composite shapes; surface area and volume of spheres, pyramids, cones and composite solids |
| Edexcel IGCSE 4MA1 | F4.9B | Find the perimeter of shapes made from triangles and rectangles |
| Eduqas GCSE C300 | FG15 | Know the formulae: circumference of a circle = 2πr = πd, area of a circle = πr²; calculate perimeters of 2D shapes, including circles; areas of circles and composite shapes; surface area and volume of spheres, pyramids, cones and composite solids |
| Eduqas GCSE C300 | HG17 | Know the formulae: circumference of a circle = 2πr = πd, area of a circle = πr²; calculate: perimeters of 2D shapes, including circles; areas of circles and composite shapes; surface area and volume of spheres, pyramids, cones and composite solids |
| OCR GCSE J560 | 10.02a | Calculate the perimeter of rectilinear shapes. |
| OCR GCSE J560 | 10.02c | Apply perimeter formulae in calculations involving the perimeter of composite 2D shapes. |
For teachers
This GCSE Maths lesson teaches perimeter of 2D and composite shapes. By the end, students should be able to calculate the perimeter of rectilinear and composite 2D shapes, including shapes where part of the boundary is a circular arc. It works through two worked examples and the mistakes examiners report.