Besides forces, there are many inverse-square relationships in physics and engineering if you look hard enough. For example, the thickness of the skin of a spherical party balloon depends on the inverse-square of its radius. Why is this the case? Write an inverse square equation for the thickness of the skin (T) as a function of the balloon radius (R). If the balloon skin is 0.036 mm thick when the balloon radius is 6.0 cm, what is the value of the constant C in the equation? What will be the skin thickness when the radius is 12.0 cm or 2.0 cm?