Step-by-step explanation:
There is the explaination in the picture
Answer:
4.44
Step-by-step explanation:
15 - 1.68 = 13.32
13.32 / 3 = 4.44
The sum of the interior angles of the polygon = (n - 2) x 180 .
(n - 2) x 180 = (n x 150)
180n - 360 = 150n
Add 360 to each side:
180n = 150n + 360
Subtract 150n from each side:
30n = 360
Divide each side by 30 :
<u>n = 12</u>