Answer:
diameter = 49 units
Step-by-step explanation:
The fromula of a circumference of a circle:
[tex]C=2\pi r[/tex]
r - radius
or
[tex]C=d\pi[/tex]
d - diameter
Use the second formula.
Substitute the value of circumference
[tex]C=153.86[/tex]
[tex]d\pi=153.86[/tex]
use the approximation of number pi: [tex]\pi\approx3.14[/tex]
[tex]3.14d=153.86[/tex] divide both sides by 3.14
[tex]d=49[/tex]
