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Question

Use the following information to answer the next question.

An aluminium sheet is heated to 27°C and then a hole is made in the sheet by cutting out a disc of area 16 cm2. The coefficient of linear expansion (α) is 2.5 × 10− 5 /K

If the sheet is heated to 225°C, then the area of the hole will


A

reduce by 0.16 cm2

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B

reduce by 0.362 cm2

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C

increase by 0.16 cm2

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D

increase by 0.362 cm2

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