An incompressible liquid which has a specific gravity of 1.34 flows through a pipe with variable cross-section area. The velocity of the liquid is measured as 10 m/s at a point (point 1) where the gauge pressure of the liquid is 0.12 bar. What is the velocity of the liquid at a point (point 2) which is 4.5 meters higher than point 1, where the gauge pressure of the liquid is 0.07 bar? If the pipe diameter at point 2 is 12 cm, what is the diameter at point 1? (Friction can be neglected)