Consider the figure attached. An illustration of a circular steel casting with a gap. (a) If the casting is heated, does the width of the gap increase or decrease? a. increase b. decrease     (b) The gap width is 1.510 cm when the temperature is 30.0°C. Determine the gap width when the temperature is 175°C. (Use 11 ✕ 10−6 (°C)−1 for the average coefficient of linear expansion for steel. Give your answer to at least three decimal places.) ______ cm

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