A). If the rat were twice as long (20 cm), how many square centimeters of skin would be heating each cubic centimeter of body? (Hint: this is the surface-to-volume ratio.)

cm2 skin per cm3 body

b)Absorbed Radiation = (exposed area) × (solar radiation) × (absorption)
In the heat of the day in the Sonoran desert, the Sun produces around 0.1 watts / cm2. Assume 1/2 the skin of the k-rat is exposed to solar radiation (recall total k-rat skin area is 315 cm2), and that the k-rat absorbs 50% of that radiation (absorption = 0.5). Using those numbers, answer the following question.
Calculate the heat gain from solar radiation and type this value into the Absorbed Radiation box on the right.

c)Assuming the k-rat has a mass of 30 grams, calculate how much metabolic heat it generates at rest.

d) conduction rate

e) the ground were at 303 K, how much heat would move into the k-rat by conduction

f) If the kangaroo rat were to lose that heat by water loss (the only mechanism left in the heat balance equation), how much water (in ml) would it need to lose every hour