What fraction of the whole circle is this sector?

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Presentation transcript:

What fraction of the whole circle is this sector? Compare and share solutions 270 360 = 27 36 = 9 12 = 3 4

Which fractions do these sectors represent? Simplify your answers

Mark your work

On your whiteboards The radius of this circle is 10cm What is the area of this circle in terms of pi?

On your whiteboards What is the area of this sector in terms of pi? 10𝑐𝑚

On your whiteboards What is the area of this sector in terms of pi? 10𝑐𝑚

On your whiteboards What is the area of this sector in terms of pi? 10𝑐𝑚

On your whiteboards What is the area of this sector in terms of pi? 10𝑐𝑚

Title: Area of Sectors 𝐴𝑟𝑒𝑎= 120 360 ×𝜋× 9 2 𝐴𝑟𝑒𝑎=27𝜋 𝑐𝑚 2 𝐴𝑟𝑒𝑎= 120 360 ×𝜋× 9 2 Calculator allowed now 𝐴𝑟𝑒𝑎=27𝜋 𝑐𝑚 2

In your books: Calculate the area of these sectors. Give you answers in terms of pi 1. 6. 2. 7. 3. 8. 4. 5.

Mark your work

On your whiteboards What is the area of the shaded region to 3 significant figures? 40.6

On your whiteboards What is the area of the shaded region to 3 significant figures?

Calculate the shaded areas to 3sf Challenge Questions Calculate the shaded areas to 3sf Acknowledgements: variationtheory.com 𝟓𝒄𝒎

Mark your work 2.26 1.83 4.03 13.1