Heat And Thermodynamics

A metal cooking pot has a base area of $0.2 \mathrm{~m}^2$ and thickness 2.0 cm . It boils water at a rate of $3.0 \mathrm{~kg} / \mathrm{min}$ when placed on a hot plate. The temperature of the part of the hot plate in contact with the pot is approximately [thermal conductivity of metal is $120 \mathrm{Js}^{-1} \mathrm{~m}^{-1} \mathrm{~K}^{-1}$, heat of vaporisation of water is $2 \times 10^6 \mathrm{~J} / \mathrm{kg}$ ]