Iron sheet 50 cm × 20 cm is heated through 100 °C. If a = 12 × 10^-6/°C, the change in area is
Iron sheet 50 cm × 20 cm is heated through 100 °C. If a = 12 × 10-6/°C, the change in area is
(A) 2.4 cm2
(B) 3.4 cm2
(C) 4.2 cm2
(D) 5.3 cm2
9 views