A Rectangular Steel Plate with Dimensions of 60 Cm ×

question 61

Multiple Choice

A rectangular steel plate with dimensions of 60 cm × 25 cm is heated from 20°C to 150°C.What is its change in area? (Coefficient of linear expansion for steel is 11 × 10−⁶/°C. )

• A) 0.82 cm²
• B) 1.1 cm²
• C) 4.3 cm²
• D) 6.6 cm²

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