Question 1. The following gure shows the cross-section of a dam. Using equation i=i+z (1) Pg to show that the hydraulic head on surface AB = H1 at point 1, 2, and 3 on surface AB, ( i.e. show that hl = h2 = h3 = H1).. Question 2. Assuming that the dam in the above cross-section is leaking, water would ow from point A along the bottom of the dam to point F, and from point B along the watertable to point E. Also assume that the distance between A and F is 100 meter, the length of the watertable from B to E is 60 meter, the water depth H1 and H2 are 75 and 30 meter, respectively, and the distance of point E to the dam bottom (H3) is 35 meter. What are the hydraulic gradients between A and F and between B and E