Respuesta :

Answer:

12.1[tex]\pi[/tex], 7.4[tex]\pi[/tex]

Step-by-step explanation:

First, we all know the formula its 2[tex]\pi[/tex]R however here we see the diameter to find R we have to divide: 12.1 divided by 2=6.05 but for me thats really useless because in the end you still have to multiply it by 2 so to find the circumference just find the diameter and add a pie beside it so the answer would be 12.1[tex]\pi[/tex] for the others do the same thing. (pls give me brainliest or something)