Calculate Length of Arcs

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Presentation transcript:

Calculate Length of Arcs Silent Teacher Intelligent Practice Narration Your Turn 3 cm 9 cm 30 cm 36° 26° 260° Practice

9cm 9cm 144° 120° Calculate the length of the arc Worked Example Your Turn Calculate the length of the arc Calculate the length of the arc 9cm 9cm 144° 120° @webstermaths

9 cm 30 cm 36° 26° 3 cm 10 cm 36° 260° 36 cm 10° 3 cm 110° 72 cm 10° Calculate the lengths of the arcs 9 cm 30 cm 36° 26° 3 cm 10 cm 36° 260° 36 cm 10° 3 cm 110° 72 cm 10° 36 cm 20° @webstermaths

1.8𝜋 cm = 5.65 cm 13 3 𝜋 cm = 13.6 cm 9 cm 30 cm 36° 26° 3 cm 2 𝜋 cm Calculate the lengths of the arcs 1.8𝜋 cm = 5.65 cm 13 3 𝜋 cm = 13.6 cm 9 cm 30 cm 36° 26° 3 cm 2 𝜋 cm = 6.28 cm 10 cm 36° 13 6 𝜋 cm = 6.81 cm 260° 2 𝜋 cm = 6.28 cm 36 cm 10° 3 cm 110° 4 𝜋 cm = 12.6 cm 72 cm 10° 11 12 𝜋 cm = 2.88 cm 4 𝜋 cm = 12.6 cm 36 cm 20° @webstermaths