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A round hole with a diameter of 10 cm is cut into a sheet of brass. The coefficient of linear thermal expansion (α) is 18.9 × 10–6 ÷ °C. What will be the change in area of the hole when the temperature is increased by 50°C?

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A round hole with a diameter of 10 cm is cut into a sheet of brass. The coefficient of linear thermal expansion (α) is 18.9 × 10–6 ÷ °C. What will be the change in area of the hole when the temperature is increased by 50°C?






 
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