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Which expression gives the length of an arc

This type of question, asked 2 times: 25 Jul 2023 S1, 26 Sep 2025 S1. All 2 questions below, oldest first.

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  1. Question 1

    25 Jul 2023 S1

    66
    The following formula is used to calculate which of the following? Angle of arc at centre360∘×π×diameter\frac{\text{Angle of arc at centre}}{360^\circ} \times \pi \times \text{diameter}

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  2. Question 2

    26 Sep 2025 S1

    74
    In a circle of radius r, a chord subtends an angle θ\theta (in radians) at the center. Which expression represents the length of the minor arc?

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