Related Clues:
- Photographers' considerations
- Awesome couple spoke and spoke!
- Matters of degrees
- Person who paints diameter and two lines in circle
- Almost set one or two bones?
- The bones of broadcasting unit briefly close to his heart
- Arm reinforcements organising raid to capture island
- Measures near vertexes
- Variables in (pi)r^2 and 2(pi)r
- Math figures measured in degrees
- 'Points of View' for old people?
- Almost set one, maybe two bones?
- Some area factors
- Straight lines from the centre to the perimeter of a circle
- Halves of a diameter