Sum of radii of two spherical ball is 22 cm and the diff of their volumes is 3050 2/3. Find radii. In this question if i r+R= 22 (eq 1)and Pi(r2-R2)=3050 2/3 (eq 2) and subs value of r from eq 1 in eq 2; my answer wont match with textbook. What should i do???