A square hole 9.8 cm along each side is cut in a sheet of copper.Find the change in the area of this hole if the temperature of the sheet is increased by 68 K. The coefficient of expasion is 1.7 × 10?5 (?C)?1.Answer in units of cm2
square hole side 9.8 cm Area 9.8^2 96.04 cm^2 Increase in temperature 68° K coefficient of expansion, 1.7 x 10^-5 m / °C 0.017 cm/°C, increase in side 9.8 + 0.017 x 68 10.956 cm, In crease Area 10.956^2 120.034 cm^2 Change in area 120.034 - 96.04 24 cm^2 ANSWER
