need help from a math wiz!!!
			 
			 
			
		
		
		
		I need to find the area of...part of a circle. 
It has a 2.5 inch diameter. I need to know the area of the 1/2 inch outer cross section. 
I hope this makes sense. 
If I was to cut off 1/2 an inch of the circle how much would I have? 
 
Thanx muchly 
		
	
		
		
		
		
		
	
		
		
	
	
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