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Question id: 74. This question is similar to one that appeared in an IB Standard paper in 2014. The use of a calculator is allowed.

The following diagram shows a circle with centre O and radius 9 cm.

The points A, B and C lie on the circumference of the circle, and AÔC = 1.2 radians.

(a) Find the length of the arc ABC.

(b) Find the perimeter of the minor sector OAC.

(c) Find the area of the minor sector OAC.

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