As the diameter is 18, a radius is half the diamater ergo the radius is 9.
Use the circumference formula:

So, adapted it would be:
2 * π * 9 which would be 56.7.
The circumference is 57m.
Hope this helps!
keeping in mind that functions do not have X-repeats, namely the x-coordinate of every pair is different, let's check this one, Check the picture below.
Answer:
1.y=1/2+2
2.y=-2+1
3.y=3/2+3
4.y=-2/3-2
Step-by-step explanation:
We can only see one problem.
That triangle is a isosceles, because it has 2 congruent sides.
-Steel jelly
Answer:
2(209 + 467) - 9/10
Step-by-step explanation: