Answer:
C. The area of the blue circle is equal to the sum of areas of green square and black circle.
Step-by-step explanation:
The area of a circle is the circumference of the circle measured with its diameter. In the given scenario the area of the blue circle is greater than the area of black circle. This is because of the difference in diameter of the two circles. The area of green square plus the area of black circle equals the blue circle.
 
        
             
        
        
        
Answer:
The answer is less than 90 degrees
Step-by-step explanation:
 
        
             
        
        
        
B. Because 20 is greter than 18.
 
        
                    
             
        
        
        
Answer: 
1) 11
2) 4
Step-by-step explanation:
1) It is 11 because in the first row we ignore the 0 since it is referring to the first digit, so the first row has 7. In the second row, we ignore the one so it would be 4 because the 9, or would be 19, is above 18.
2) It is 4 because there is one person over 65. In the second row we ignore the 7 and there are 3 people in the 7 row.
 
        
             
        
        
        
For the second question (5/6)/(4) is the same as (5/6)*(1/4) so just multiply across and you get (5/24)