Hello candidate,

Given that the initial radius which is the half of the initial diameter is equal to 4 cm. Provided that the soap bubble is expanded under normal temperature and pressure conditions, the new radius is equal to 8 cm.

The volume of a spherical bubble is given by the formula 4/3×π×R3. So, the expansion in volume of soap bubble is equal to, 4/3×π× (8^3- 4^3)= 1877.33 cm3.

Hope that this answer was helpful!!