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Math Analysis SL Paper 1 (November 2024, TZ2)

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  1. [Maximum mark: 5]
    Points A and B lie on a circle with centre O and radius r cm, where ∠AÔB = 1.5 radians.
    This is shown on the following diagram.
Figure region page 4
Figure region from page 4

The area of sector OAB is 48 cm².

(a) Find the value of r. [3]

(b) Hence, find the perimeter of sector OAB. [2]