The surface area A of a sphere, expressed in terms of the radius r is given by the formula A = 4πr². (i) Express the radius of the sphere in terms of the surface area.
(ii) If the surface area of a sphere is 616 cm² , find its radius. take π = 22/7

So don't take my word i'm not exactly a mathematical person but i would assume a. because while selling the soap every month you increase in sells so you would by 11 percent. the you would get the factor 0.89 which if i had to guess would be the monthly profit over 11 probably wrong tho