A steel tube has an outside diameter of 3.000 cm at room temperature of 20°C. A brass tube has an inside diameter of 2.997 cm at the same temperature. If the temperature of the brass tube is changed to( 400- x)^(@) C the steel tube can inserted into the brass tube, then x-____

A steel tube has an outside diameter of 3.000 cm at room temperature o

1.	A steel tube has an outside diameter of 3.000 cm at room temperature of 20°C. A brass tube has an inside diameter of 2.997 cm at the same temperature. If the temperature of the brass tube is changed to( 400- x)^(@) C the steel tube can inserted into the brass tube, then x-____
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