Answer:
C. 44 in.
Step-by-step explanation:

Answer:
R ≈ 7.4
Step-by-step explanation:
Substitute I = 25000000 into the equation
log(25000000 ) = R , then
R ≈ 7.4 ( to 1 dec. place )
There are 40 black and 20 blue so if you divide by 20 the ratio is 2:1