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(c) The estimated surface area of the lung system of a new-born baby is 4.2 m²; this is around one twentieth of the overall surface area of a typical adult's lungs. Calculate the overall surface area of a typical adult's lungs.​

User Nbout
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Answer: 84 m²

Explanation: The estimated surface area of the lung system of a newborn baby is given=4.2m²

size of a typical adult's lungs is 1/20th of a baby's lungs size,

so the lungs of a typical adult are:

1/20x4.2m²=84m²

User Brmore
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