The leg's resistance is found by:
The fraction of fat, ffat
It's possible to estimate the percentage of fat in the body by measuring the resistance of the upper leg rather than the upper arm; the calculation is similar. A person's leg measures 40 cm between the knee and the hip, with an average leg diameter (ignoring bone and other poorly conducting tissue) of 12 cm. A potential difference of 0.78V causes a current of 1.6 mA. What are the fractions of muscle and fat in the leg? Express your answer using two significant figures separated by a comma.
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