 
			 
			MCQOPTIONS
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				| 1. | Estimate the wetted perimeter of a circular channel having radius R and depth d, if the angle subtended at the centre is Ɵ. | 
| A. | <sup>RƟ</sup>⁄<sub>2</sub> | 
| B. | RƟ | 
| C. | 2RƟ | 
| D. | 3RƟ | 
| Answer» D. 3R‚Äö√†√ú‚àö¬∫ | |