Helpp me hw is so stressing
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The formula for circumference is 
.
To express the circumference exactly, plug the diameter in for
and put the 
symbol in front of it. Don't multiply. This expresses the exact circumference.
Say you have the diameter of 17.
You can express the circumference with 17.
To express the circumference exactly, plug the diameter in for
Say you have the diameter of 17.
You can express the circumference with 17
In this question, we have to write the set of points from -6 to 3 but excluding -2 and 3 as a union of intervals .
For union, we use U.
For the points that we have to exclude , we put parenthesis on there side that is ().
Therefore the required interval form is
As we see that () are used with -2 and 3 . And that's the required interval form .