Dr. J's Maths.com

**Where the techniques of Maths**

are explained in simple terms.

are explained in simple terms.

Geometry - Circles - Mensuration.

Test Yourself 1.

- Algebra & Number
- Calculus
- Financial Maths
- Functions & Quadratics
- Geometry
- Measurement
- Networks & Graphs
- Probability & Statistics
- Trigonometry
- Maths & beyond
- Index

Arc length | 1. | 2. |

3. | 4. | |

5. | 6. | |

Area of a sector | 7. | 8. |

11. |
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Area of a segment | ||

Mixed exercises | 18. | |

The length of an arc of a circle is 2 π cm and the area of this sector is 8 π cm Find: Hint.Great question for learning technique. Write out the two equations for Arc Length and for Area of the sector. We have simultaneous equations with the angle and the radius as unknowns. DIVIDE the area equation by the arc length equation to isolate radius. Then substitute to find the angle. REMEMBER THIS approach for a number of topics especially series!!! |
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