(Solved): An average adult human can be modeled as a \( 70 \mathrm{~kg} \), \( 140-\mathrm{cm} \)-tall cylin ...

An average adult human can be modeled as a \( 70 \mathrm{~kg} \), \( 140-\mathrm{cm} \)-tall cylinder with a diameter of \( 25 \mathrm{~cm} \). Use the approximate mass of a mammalian cell of \( 10^{-12} \mathrm{~kg} \) to make an order-of-magnitude estimate, to one significant figure, of the number of cells in a human body by considering a person's mass. Express your answer to one significant figure. Part B Use the approximate diameter of a mammalian cell of \( 10^{-5} \mathrm{~m} \) to make an order-of-magnitude estimate, to one significant figure, of the number of cells in a human body by considering a person's size. Express your answer to one significant figure.