A rectangular steel plate with dimensions of 60 cm *25 cm is heated from 20$\degree$C to 150$\degree$C. What is its change in area? (Coefficient of linear expansion for steel is 11 *10 ^- ⁶/$\degree$C.) A) 0.82 cm² B) 1.1 cm² C) 4.3 cm² D) 6.6 cm²

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Quizplus · Accepted Answer

The change in area can be calculated using the formula: ΔA = 2αAΔT, where α is the coefficient of linear expansion, A is the initial area, and ΔT is the change in temperature. Substituting the given values: ΔA = 2 * 11 * 10^-6 * (60 * 25) * (150 - 20) = 4.3 cm².

A Rectangular Steel Plate with Dimensions of 60 Cm *25 °\degree°

A Rectangular Steel Plate with Dimensions of 60 Cm *25 $\degree$