A Thin, Circular Disc Is Made of Lead and Has

question 29

Multiple Choice

A thin, circular disc is made of lead and has a radius of 0.0350 cm at 20.0 °C. Determine the change in the area of the circle if the temperature is increased to 625.0 °C. The coefficient of linear thermal expansion for lead is 29.0 × 10^-6/C°.

• A)4.33 × 10^-5 cm²
• B)1.36 × 10^-4 cm²
• C)1.89 × 10^-4 cm²
• D)3.19 × 10^-4 cm²
• E)5.92 × 10^-4 cm²

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