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 39 cm between the knee and the hip, with an average leg diameter (ignoring bone and other poorly conducting tissue) of 11 cm. A potential difference of 0.70V causes a current of 1.7 mA.
What are the fractions of muscle and fat in the leg (in percent)?