# Question: A person weighs 170 lb a What is his mass

A person weighs 170 lb.

(a) What is his mass in kilo-grams?

(b) Assuming the density of the average human body is about that of water (which is true), estimate his body’s volume in both cubic meters and liters. Explain why the smaller unit of the liter is more appropriate (convenient) for describing a volume of this size.

(a) What is his mass in kilo-grams?

(b) Assuming the density of the average human body is about that of water (which is true), estimate his body’s volume in both cubic meters and liters. Explain why the smaller unit of the liter is more appropriate (convenient) for describing a volume of this size.

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