A U-tube manometer filled with water, density 62.4 lbm/ft3, shows a height difference of 10 in. The right branch is tilted to make an angle of 30 degrees with the horizontal, what should the length of...

A U-tube manometer filled with water, density 62.4 lbm/ft3, shows a height difference of 10 in. The right branch is tilted to make an angle of 30 degrees with the horizontal, what should the length of the column of water in the tilted tube to have the same pressure with the U-tube manometer?