A Square Hole, 30 Cm on Each Edge, Is Cut

question 95

Multiple Choice

A square hole, 30 cm on each edge, is cut in the center of a square aluminum plate 1 m on a side. The coefficient of linear expansion of aluminum is 2.4 × 10^-5/C^o. If the plate is heated 25^oC above the starting temperature, the area of the hole

• A) increases by 1.1 cm².
• B) increases by 0.54 cm².
• C) increases by 0.00060 cm².
• D) decreases by 0.54 cm².
• E) decreases by 0.00060 cm².

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