A thin metal disc of surface area 500 cm2 at 0 °C is heated to 40 °C. Find the increase in the surface area of the disc.(σ = 4 × 10-5 °C -1)

A thin metal disc of surface area 500 cm2 at 0 °C is heated to 40 °C

1.	A thin metal disc of surface area 500 cm2 at 0 °C is heated to 40 °C. Find the increase in the surface area of the disc.(σ = 4 × 10-5 °C -1)
Answer» A thin metal disc of surface area 500 cm2 at 0 °C is heated to 40 °C. Find the increase in the surface area of the disc. (σ = 4 × 10^-5 °C ^-1)