Question

The base of a tube is 14 cm in diameter and 25 cm high if it contains half water then the volume of water inside the tube is .... cm3

Answer 1

Volume air = 1/2.phi.r^2.t
= 1/2.22/7.49.25
= 11.7.25
= 77.25
= 1.925cm^3 

Answer 2

vol =πr^2h
22/7×7×7×25/2
=1925cm^3