# Develop and use the formulas to find the circumferences of circles in terms of the diameter d or radius r: Circumference of a circle = pi x d Circumference of a circle = 2 x pi x r

1. | The Flying Frenchman - calculate number of wheel rotations given length of journey and wheel diameter | |

2. | The Secret Formula 2 - select correct expression for the perimeter of circle and calculate | |

3. | Pond-er with Percibald - calculate circumference given radius | |

4. | Go Go Grand-mobile - perimeter of circle | |

5. | Wheelies! - perimeter of a circle | |

6. | Knights Round The Table - perimeter of a circle | |

7. | The Point of the Circle is... 2 - perimeter of a circle | |

8. | The Point of the Circle is... 1 - perimeter of a circle | |

9. | The Space Race 3 - perimeter of a circle | |

10. | Knights Round The Table 2 - perimeter of a circle |