Irregular menstruation is when the length of the cycle is more than 35 days, or if the duration varies. A period, or menstruation, is the part of the menstrual cycle in which the endometrium, which is the lining of the uterus, is shed. This appears as bleeding from the womb that is released through the vagina.
1 There is no universally agreed symbol for the cubic foot/feet. 2  Various abbreviations are used, dependent on context, including (but not exclusively) cubic ft, cu ft, cb ft, cbf, ft3, foot3, feetÂ³, ftÂ³.  The cubic foot is used mainly in the United States, Canada and the United Kingdom as a measurement of volume.
Cubic Feet. A cubic measurement is the three-dimensional derivative of a linear measure, so a cubic foot is defined as the volume of a cube with sides 1 ft in length. In metric terms a cubic foot is a cube with sides 0.3048 metres in length. One cubic foot is the equivalent to approximately 0.02831685 cubic metres, or 28.3169 litres. Gallons There are several different kinds of Gallons available- us liquid, us dry and uk.