The water bubble has a spherical shape. The largest spherical bubble that can fit into the cuboid with dimensions 8 cm, 7 cm and 9.5 cm is a sphere that has a diameter of 7 cm.
The volume of a sphere is given by `(4/3)*pi*r^3`
Substituting the value of r obtained earlier i.e. `7/2 = 3.5` , the volume of the sphere is `(4/3)*pi*3.5^3 = (343/6)*pi`
The required volume of the largest spherical bubble is `(343/6)*pi` cm^3