How i solve the ncert class 10 surface areas and volumes Find the solution of exercise 13.2 question no.8 . Also find the easiest and simplest form of this question . A spherical glass vessel has a cylindrical neck 8 cm long, 2 cm in diameter; the diameter of the spherical part is 8.5 cm. By measuring the amount of water it holds, a child finds its volume to be 345 cm3. Check whether she is correct, taking the above as the inside measurements, and π = 3.14.