Answer: 188.4 cm
Step-by-step explanation:
Given
the radius of the circle is 
Also, circumference is given by 
Putting values

The circumference of the circle is 
Answer is.. 144.
2 x 4 = 8
9 x 8 = 72
72 x 2 = 144
We want to solve the equation :

first, multiply both sides by 4:


divide both sides by 3:

add -3 to both sides:

Answer: x=9
It is 52 because when roundest to the whole number 52 is closest