this problem, provide the complete solution, and final answer.

Water flows through a rectangular channel 0.60m deep and 0.90m wide. The discharge through the channel is 0.03m?/s. 11. Determine the area of the channel. a) 0.45 m? b) 0.54 m? c) 0.25 m? d) none of the above 12. Find the wetted perimeter. a) 2.1m b) 2.57 m c) 5.56 m d) none of the above 13. What is the hydraulic radius? a) 0.214m b) 0.210 m c) 0.257 m d) none of the above 14. Determine the velocity of flow in the channel. a) 0.0556 m/s b) 0.0667 m/s c) 0.12 m/s d) none of the above 15. Solve the slope of the channel assuming n = 0.012 (Use manning's formula) a) 0.00000272 b) 0.0000272 c) 0.00165 d) none of the above