A semi-transparent plate (A₁ = 2 cm²) has an irradiation of 500 W/m², where 30% of the irradiation is reflected away from the plate and 50% of the irradiation is transmitted through the plate. A radiometer is placed 0.5 m above the plate normal to the direction of viewing from the plate. If the temperature of the plate is uniform at 350 K, determine the irradiation that the radiometer would detect.