Calculate discharge of a weir 2 metre long with a water flow over a head of 250 mm use Francis formula?

Calculate discharge of a weir 2 metre long with a water flow over a he

1.	Calculate discharge of a weir 2 metre long with a water flow over a head of 250 mm use Francis formula?
A.	0.34 m<sup>3</sup>/s
B.	0.46 m<sup>3</sup>/s
C.	0.25 m<sup>3</sup>/s
D.	0.65 m<sup>3</sup>/s
Answer» C. 0.25 m<sup>3</sup>/s