Hello Shruti, The working formula for this is: where

ρ t = ρ0 [1 + α (T – T o )

where ρ 0 is resistivity at To degree celius, ρ t is resistivity at T degree celcius, a is the temperature coefficient of resistivity, (T - To) is the change in temperature from inital to final state.

So google and plug in your constants and get the answer.