A rectangular steel plate with dimensions of 30 cm x 25 cm is heated from 20 $\degree$C to 220 $\degree$C.What is its change in area? (Coefficient of linear expansion for steel is 11 x 10^-6/C $\degree$. ) A)0.82 cm² B)1.65 cm² C)3.3 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 x 10^-6 * 750 cm^2 * 200°C = 3.3 cm^2.

A Rectangular Steel Plate with Dimensions of 30 Cm X °\degree°

A Rectangular Steel Plate with Dimensions of 30 Cm X $\degree$