Hello.
C would be your answer.
Hope it helps :)
        
                    
             
        
        
        
<span>200/40=5 5/2=2.5 2.5+5=7.5 30/7.5 = 4 hours</span>
        
             
        
        
        
3 inches
solved by following the rules of a 3 4 5 right triangle
        
                    
             
        
        
        
Answer: The first one is = 27.5
1/3 * 25 * 3.3 = 27.5
 
        
             
        
        
        
Answer:
40 cm.
Step-by-step explanation:
Given,
height of the object = 10 cm
Distance of the object from the X-ray= 50 cm
Distance of detector from the source = 2 m = 200 cm
Height of the image, h = ?
Now,



Again applying 


h = 40 cm
Hence, height of the image is equal to 40 cm.