Irrigation Engineering

# If A is the area of the surface, x̅ is the depth of its C.G. from the surface of the water and ω is the density of water, then

- A. Total pressure on the surface is equal to ωx̅
- B. Depth of the point at which total pressure acts is equal to its moment of inertia divided by Ax̅
- C. Depth of the centre of pressure is 2/3H vertically below the surface
**D. All the above**