ADHD begins in childhood and often lasts into adulthood. As many as 2 out of every 3 children with ADHD continue to have symptoms as adults. Symptoms of ADHD can differ from person to person, but there are three basic types of ADHD. Each one is identified by the symptoms of hyperactivity, impulsivity, and inattention.
Convert acre-feet to other major units of volume. A unit used to measure volumes of water, typically for use in irrigation. One acre-foot is the amount of water that would cover an acre of land to a depth of 1 foot, = 43,560 cubic feet, approximately 325,851 U.S. gallons (approximately 1233.48 cubic meters).
One inch is 1 / 12 feet so one acre of water 1 inch deep is. 43560 1 / 12 = 3630 cubic feet of water. In my dictionary I found that there are 231 cubic inches in an american gallon. A cubic foot is 12 inches by 12 inches by 12 inches and thus one cubic foot is. 12 12 12 = 1728 cubic inches.