 
			 
			MCQOPTIONS
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				| 1. | Estimate the hydraulic radius of the most economical trapezoidal channel section having depth y and side slope Z. | 
| A. | <sup>y</sup>‚ÅÑ<sub>2</sub> | 
| B. | y | 
| C. | 2y | 
| D. | 3y | 
| Answer» B. y | |