A tank measuring 10.0 feet by 10.0 feet by 10.0 feet is completely filled with water. If a 4-inch-diameter, square-edged orifice is located 1.00 foot above the bottom of the tank (to the orifice...

A tank measuring 10.0 feet by 10.0 feet by 10.0 feet is completely filled with water. If a 4-inch-diameter, square-edged orifice is located 1.00 foot above the bottom of the tank (to the orifice center), (a) What is the discharge? (b) Estimate the time required to empty the tank halfway.