 
			 
			MCQOPTIONS
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				| 1. | The total amount of heat energy received by the sphere of radius r is | 
| A. | 2 π R<sup>2</sup> S | 
| B. | 6 π R<sup>2</sup> S | 
| C. | 4 π R<sup>2</sup> S | 
| D. | π R<sup>2</sup> S | 
| Answer» D. ‚âà√¨‚àö√ë R<sup>2</sup> S | |