Answer:
12°
Step-by-step explanation:
So, for your 30-gon, the interior angles total up to (30-2) * 180 = 5040. Each interior angle is that total divided by the number of interior angles, or 5040/30 = 168º:
<u>The measure of each exterior angle is the total divided by the number of angles, or 360/30 = 12º.</u>


where
is the Jacobian matrix for the transformation,

We have

so that the integral is

Well, it really depends on the context they are in. For instance,

is different than

or

or

They all are interpret differently. For instance, one is a line, another is a square and one is a cube.
For this you would use Pythagorean theorem (a^2+b^2=c^2) a=15 and c=sqrt 514 plug the numbers in and you’ll be set