Answer:
Option B: 26cm is the radius of smaller circle.
Step-by-step explanation:
Given that:
Ratio of circumferences of two circles = 2:3
We know that circumference of circle is given by 2πr.
Radius of larger circle =  = 39 cm
 = 39 cm 
Radius of smaller circle = 
Now, 

Putting radius of larger circle

Therefore,
The radius of smaller circle is 26cm.
Hence, 
Option B: 26cm is the radius of smaller circle.
 
        
             
        
        
        
Answer:
27 cups
Step-by-step explanation:
(3 quarts = 12 cups) (5 pints = 10 cups) (plus 5 cups) = 27 total
 
        
             
        
        
        
Nope.
They don't meet the requirements of the triangle inequality.
2.1 + 4 = 6.1 < 7.9
The triangle inequality requires the sum of any two sides be greater than the third side.
        
             
        
        
        
If this is correct the answer would be
y^2 + 0.1y + 0.0025
        
             
        
        
        
Answer: A.
Step-by-step explanation: