Shape and Space 7
2 marks · NormalCalculate the length of the arc of a circle with radius 7 cm and angle 45° at the centre.
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5.50 cm (±0.05)
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Marking points
M1 · 1 mark · Uses correct arc length formula: (θ/360) × 2πr
A1 · 1 mark · Correctly evaluates to 5.50 cm (3 s.f.)
Worked solution
Arc length = (45/360) × 2 × π × 7