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A ring made from aluminum has an inner radius of 2.50000 cm and an outer radius...

A ring made from aluminum has an inner radius of 2.50000 cm and an outer radius of 3.50000 cm, giving the ring a thickness of 1.00000 cm. The thermal expansion coefficient of aluminum is 23.0 ⨯ 10-6/°C. If the temperature of the ring is increased from 20.0°C to 90.0°C, by how much does the thickness of the ring change?

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