Question: 1. A circular disc is cooled. During the cooling process, the area is decreasing at a rate of 10 mm2/s. At what rate is the

1. A circular disc is cooled. During the cooling process, the area is decreasing at a rate of 10 mm2/s. At what rate is the radius of the disc changing when the radius of the disc is 8 mm.(3 marks)

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