Answer :
Final answer:
By calculating the Buoyancy difference in mass between displaced air and helium in the balloon, the payload size it can lift is 444 kg.
Explanation:
The payload a balloon can lift is determined by the difference in the weight of the air displaced by the helium and the weight of the helium itself. In this case, you can calculate this value by multiplying the volume of the helium (400 m³) by the difference in densities of air and helium (1.29 kg/m³ - 0.18 kg/m³), which gives the total lifted mass in kg. Therefore, the payload size the blimp can lift is (400 m³ * (1.29 kg/m³ - 0.18 kg/m³)) = 444 kg.
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