Respuesta :

Answer:

75.4

Step-by-step explanation:

circumference = 2 x pi x r

2x3.14x12 = 75.4

Answer:

24π

Step-by-step explanation:

Circumference formula: 2πr

Now, plug in 12 as r.

2π(12)

12 x 2=24

24π

Final answer:

24π