An Annular Ring of Aluminum Is Cut from an Aluminum

question 74

Multiple Choice

An annular ring of aluminum is cut from an aluminum sheet as shown. When this ring is heated:

• A) the aluminum expands outward and the hole remains the same in size
• B) the hole decreases in diameter
• C) the area of the hole expands the same percent as any area of the aluminum
• D) the area of the hole expands a greater percent than any area of the aluminum
• E) linear expansion forces the shape of the hole to be slightly elliptical

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