Edexcel GCSE Design and Technology · 1DT0
Specification 2.5.2, 5.5.2 · Paper 1
Revise: Sizes and MeasurementsIts outside radius is 15 mm and its inside radius is 12 mm.
- Revise: Component Sizes: Area and Diameter
The distance from the centre of a circle to its edge, equal to half the diameter.