11 is closest but i realy think 11.3 is closest if thats an answer
Answer:
5.732484076 =d
Step-by-step explanation:
The circumference is given by
C = pi*d
18 = 3.14 *d
Divide each side by 3.14
18/3.14 = 3.14d/3.14
5.732484076 =d
for A is-48
nd B is-16.5
nd C is-32.4
