A small surface of area A₁ = 3 cm² emits radiation as a blackbody with total emissive power of E_b = 5.67 × 10⁴ W/m². Part of the radiation emitted by A1 strikes another small surface of area A₂ = 8 cm² oriented as shown in the figure. Determine the rate at which radiation emitted by A₁ strikes A₂, and the irradiation on A₂.

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10₁= 55° A₁ = 3 cm² A₂ = 8 cm² 0₂=40° r = 50 cm