An iron plate is a 10 cm square at 12 °C. The linear expansion coefficient of iron is 11 x 10-6/°C. Calculate: a) The area expansion coefficient of iron.

Answer 1

To calculate the area expansion coefficient of iron, we use the formula:

Area Expansion Coefficient (α) = 2 * Linear Expansion Coefficient

Given that the linear expansion coefficient of iron is 11 x 10^-6/°C, we can plug in this value into the formula:

Area Expansion Coefficient (α) = 2 * 11 x 10^-6/°C
Area Expansion Coefficient (α) = 22 x 10^-6/°C

So, the area expansion coefficient of iron is 22 x 10^-6/°C.