"Percent" - For details read the explanation given below.
percentages compare numbers in the numerator to 100 and the ratio that compares a number to 100 is logically called percent.
Answer:
0.595.
Step-by-step explanation:
.
First of all, it is 2r

and it would be divide by 3.14 (pi) and then you should have the diameter. Then divide by 2 to find radius.