IN MATLAB

You are designing a spherical tank to hold water. The total volume of liquid contained in the tank can be computed as V = pi h^2 (3 R - h)/3 where V is the volume (m^3), h is the depth of water in the tank (m), and R is the radius of the tank (m). If the diameter of the tank D = 8 m, to what depth must the tank be filled so that it holds 55 m^3? Use the false-position method to determine your answer to a relative error