# Orifice Area

## Formulas that use Orifice Area

\(\large{ A_0 = \frac{ Q }{ C_d \; \sqrt{ 2 \; g \; H } } }\) |

### Where:

\(\large{ A_o }\) = orifice area

\(\large{ h }\) = center of head

\(\large{ C_d }\) = discharge coefficient

\(\large{ Q }\) = flow rate

\(\large{ G }\) = gravitational constant