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Sector of given radius (or diameter) and angle: length of the arc

The same question, asked 2 times: 19 Jul 2023 S1*, 12 Sep 2024 S3. Every wording below, oldest first.

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  1. Question 1

    19 Jul 2023 S1

    68
    Find the length of the arc of the sector of a circle of diameter 7 cm with a central angle of 108∘108^\circ. [Use π=227\pi = \frac{22}{7}]

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  2. Question 2

    12 Sep 2024 S3

    75
    If the sectorial angle with radius 9.6 units is 75∘75^\circ, what is the length of the arc?

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