posted by Urgent Help .
an iron of diameter 4 cm at 25 degree and a cylinder of diameter 4.002 cm is made of the same material at the same temperature. to what temperature the ring should be heated so that the cylinder passes through the ring easily.?
a) 41.6 degree Celsius
b) 66.6 degree Celsius
c) 32.6 degree Celsius
d)76.6 degree Celsius
please show working and thank you
Linear coefficient of thermal expansion
Δt = 0.002/4•12•10^-6=41.66º