急! F5 Graphs of Functions 3q2

19(a) The volume of each ball is (4/3)πx^3So, after the ice-cream melts4(4/3)πx^3 = π(3)^2(3X - 2)16x^3 - 81x + 54 = 0(b) Consider y = 16x^3 - 81x and y = -54The intersection points of these two lines is the solution of 16x^3 - 81x + 54 = 0From the graph, the value of x is 1.77921099245176 or 0.75 (rejected)