Square Feet. The square foot is a unit of area used in the imperial and U.S. customary measurement systems. A square measurement is the two-dimensional derivative of a linear measure, so a square foot is defined as the area of a square with sides 1 ft in length.
http://wiki.answers.com/Q/How_long_is_a_black_rhino_pregnant_for. A Black Rhino is pregnant usually between 419 and 478 days, or 15 to 16 months. The mother will give birth to a single calf, weighing in on average 35 to 50 kg, (about 80 pounds). The calf will stay with it's mother anywhere from 2 to 3 yea...
How long does it take for a pygmy goat to have its baby? A pygmy goat is pregnant for about 150 days, then when she goes into labour it takes about an hour or so depending on the number of kids she is having.er cycle is normally 21 days, so if the buck does not impregnate in the first heat â¦ then she won't come in heat again for 21 days (unless chemical intervention is used) and once pregnant the pregnancy lasts 5 months.