Problem of a tank with a trapezoidal section

[Queren Suriano]

Homework Statement

In the figure are the dimensions, and the question is the time in which the take will empty
Area of orifice 1 cm2
Discharge coefficient: 0.447
Gravity 10 m/s2

Homework Equations

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Area of surface = 8x = 8 (2 H) = 16H

The Attempt at a Solution

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The red lines are the tank. And I prolongate the lines of the section to find the relation between "H" and X.

[/B]

 

[mfb]

A description what you are calculating where (and how your variables are defined) would help. Also, the formulas are much easier to read if you write them here instead of showing the scanned paper.