Suppose that a spherical droplet of liquid evaporates at a rate
that is proportional to its surface area.
dv/dt=-kA
where V =volume (mm3), t =time (min), k =the evaporation rate
(mm/min), and A =surface area (mm2). Use Euler’s method to
compute the volume of the droplet from t 5 0 to 10 min using a step
size of 0.25 min. Assume that k = 0.08 mm/min and that the droplet

initially has a radius of 2.5 mm.