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!
Answer:
11:6
Step-by-step explanation:
hope this helped :)
Ok so when you add fractions, the denominators have to be the same, therefore: (whole numbers you can still add)
5(1/2)+5(1/2)= 10(2/2), which equals to 11.
5(1/2) is also 5.5, since 1/2 is 50/100.
5.5 + 5.5 = 11
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