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Circles –properties and area Key learning • How did Miss Nawaz describe the arc and sector using her favourite food? Cherry pie is delicious….Apple pies are too! Recall Can you draw and label these parts onto the circle? • Radius • Diameter • Chord • Arc • Sector Year______ Bronze Calculate the area of these shapes. 1) Circle with a radius of 5cm 2) Circle with a diameter of 8cm Silver Set_____/Due_____ Memory 𝐴 = 𝜋𝑟 2 𝐶 = 𝜋d Gold 1) Find the area inside this running track to the nearest m 2. 1) Find the area of this semi circle 2) Find the area of this semi circle 3) Find the area of this quarter circle 2) The diagram shows a circle of diameter of 6cm inside a square of side 10cm. a) Work out the area of the square b) Work out the area of the circle c) By subtraction, work out the area of the shaded part of the diagram. Circles –properties and area Key learning • How did Miss Nawaz describe the arc and sector using her favourite food? Cherry pie is delicious….Apple pies are too! Recall Can you draw and label these parts onto the circle? • Radius • Diameter • Chord • Arc • Sector Year______ Bronze Calculate the area of these shapes. 1) Circle with a radius of 5cm A=78.5 2) Circle with a diameter of 8cm A=50.3 Silver Set_____/Due_____ Memory 𝐴 = 𝜋𝑟 2 𝐶 = 𝜋d Gold 1) Find the area inside this running track to the nearest m2. A=6303 + 2578.68… = 8881.7 1) Find the area of this semi circle A=11.5 2) Find the area of this semi circle A=26.4 3) Find the area of this quarter circle A=28.3 2) The diagram shows a circle of diameter of 6cm inside a square of side 10cm. a) Work out the area of the square 100 b) Work out the area of the circle 9𝜋 c) By subtraction, work out the area of the shaded part of the diagram. A=71.7