Answer:

Step-by-step explanation:

First, collect and rearrange the like terms.



Then, solve the equation:



So, the answer is
. Hope my solution and explanation can help you. Thank you!
If you still cannot get the point, you can ask me anytime.
C= 2*pi*r
pi= approx. 3.14
So
The first one with the radius being 18 would be approximately 113.04
BECAUSE 18 * 2 = 36
36*3.14= 113.04
DO THE SAME PROCESS with the other values you were given...
Also if they give you the diameter the formula is C= d*pi
that formula is the same as c=2*pi*r ..... Use either... just remember when they give you the radius.... the radius is half of the diameter... so take the radius times 2 and times that by pi
When it asked for an approximation use 3.14 for pi.
I'm sure you can do the rest by yourself. I hope this helped!
Answer:
FG i think
Step-by-step explanation: