Hi, I have an assignment in my Physics class and I don't know where to start in solving these two problems. I just know I have to use Bernoulli's Equation and Torricelli's Theorem but I don't know how to apply it. :/ Can someone help me?

1. What is the pressure change in methyl alcohol (SG = 0.791) flowing a 4.0 cm diameter pipe to a 1.5 cm diameter pipe if the velocity in the larger pipe is 0.40 m/s?

2. Water flows steadily from an open tank. The elevation of point 1 is 10 m and the elevation of point 2 is 2 m. The cross-sectional area at point 2 is 0.0480 m^2 . The area of the tank is very large compared with the crosssectional area of the pipe. Find the gauge pressure at point 2