A hemispherical tank of radius (R) has an orifice of cross-sectional area (a) at its bottom and is full of liquid. The time required to empty the tank completely is

A hemispherical tank of radius (R) has an orifice of cross-sectional a

1.	A hemispherical tank of radius (R) has an orifice of cross-sectional area (a) at its bottom and is full of liquid. The time required to empty the tank completely is
A.	4π R1/2/15Cd × a √(2g)
B.	4π R3/2/15Cd × a √(2g)
C.	4π R5/2/15Cd × a √(2g)
D.	4π R7/2/15Cd × a √(2g)
Answer» D. 4π R7/2/15Cd × a √(2g)