210 : 65 
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42 : 13 is the ratio of 210mm long and 65mm wide
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<span>divide both numbers by 5</span>
        
             
        
        
        
2.52 * 27.94 = 70.4088, so not that one
94.1 * 2.5 = 235.25, so not that one
1.83 * 2.9 = 5.307, so not that one
25.07 * 5.4 = 135.378, so that one
Answer:
D. 25.07 * 5.4 = 135.378
 
        
                    
             
        
        
        
        
8x7x6 = 336. There are 8 possible options for slot 1, then 7 for 2, and 6 for the last slot.