Surface A in the figure is coated with white paint and maintained at temperature of $$27^\circ C$$. It is located directly opposite to surface B which can be considered a black body and maintained at temperature of $$727^\circ C$$. Calculate the amount of heat that needs to be removed from surface A per unit area to maintain its constant temperature. (consider emissivity of the white paint = 1 and view factor = 1, $$\sigma$$ = Stefan — Boltzmann constant)