It is possible to approximate the percentage of fat in the body by measuring the resistance of the upper leg rather than the upper arm; the computation is similar. A person's leg measures 38 cm between the knee and hip, having average leg diameter (avoiding bone and other poorly conducting tissue) of 13 cm. The potential difference of 0.80 V causes a current of 1.7 mA.
Find out the fractions of muscle and fat in the leg?