2 feet and 1.2 inches.
640 acres = 27,878,400 square feet.
1 yard = 3 feet 640 yards = 1920 feet
There are 12 inches in a foot, so 640/12 = 53.3333 feet.
640,000 millimeters = 640 meters.
640 square feet = 71.1 square yards.
5 feet = 1524 millimeters
640 acres = 27,878,400ft²
35 feet = 10,668 millimeters.
There are 30.48 centimetres in one foot. Therefore, rounded to two decimal places, 640 centimetres is equal to 640/30.48 = 21.00 feet.
There are 0.3048 metres in one foot. Therefore, rounded to two decimal places, 640 metres is equal to 640/0.3048 = 2099.74 feet.
2200 millimeters is about 7.217 feet(86.6 inches, 7 feet and 2.6 inches). 1 Foot ~ 304.8 millimeters 2200 millimeters / 304.8 millimeters = 7.217 Feet
8 X 10 X x = 640ft3 80x = 640 80x/80 = 640/80 x = 8 The answer is 8 feet deep