Answer:
3cm espero te sirva jajajajaja
im pretty sure the answer is 30
If we want to write the given four numbers in another form, we can write it like this;




Now let's rewrite the given expression and get the result.

Answer:
∠1 = 36°
Step-by-step explanation:
All angles of a regular polygon are congruent, as are the sides. A regular decagon will have 10 congruent angles.
<h3>Exterior angles</h3>
The sum of the measures of the exterior angles of a convex polygon is always 360°. This decagon has 10 congruent exterior angles, so the measure of each is given by ...
10(∠1) = 360°
∠1 = 36° . . . . . . . . divide by 10