The ratio of the of a circle to its a}. radius, diameter, or circumference to its b} diameter, circumference, radius? approximately 3.14. fill in the blanks.

The ratio of the circumference what is 2pir so for A. is right circumference  and for B. is right diameter what is 2r because the ratio of circumference and diameter is equal 2pi*r/2r = pi so 3,14

so C/D = 2pir/2r = pi so 3,14 

hope this will help you 

No a triangle cannot be formed because when you add the two smallest number together (which would be 11) the have to be bigger than the number it is "against" ( which would be 12)