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				| 1. | The top width of a triangular channel section is 4m and the depth of the section is 8m, calculate the wetted perimeter of the channel. | 
| A. | 16.5m | 
| B. | 17.5m | 
| C. | 18.5m | 
| D. | 19.5m | 
| Answer» B. 17.5m | |