Thx tahayahahataghaahtsyaha
Answer:
900
Step-by-step explanation:
(n – 2)180 where n is the number of sides
since this is a 7 sided polygon
(7-2) * 180
5 * 180
900
D is the bast answer for this question, but, the equation should be (78-54)/3=p.
K=10
Here is the equation
180-115=65
(4K+5)+(6k+10)+65=180
