The correct answer is 13,728
Hope this helps!
Answer:
missing side length = 9
Step-by-step explanation:

a = 6
b = 7
c = missing side





Answer:
1780
Step-by-step explanation:
product means multiply
20x89=1780
Yes, but your answer will be a decimal, but make sure you check your work and one way you can check your work is by first combing like terms, and then solve it as it is an equation.
Each interior angle = 540/5= 108