Answer:
1
Step-by-step explanation:
(2x9)= 18
18x10=180
there is 1 zero in 180
Answer is in the pic above. Theorems used:
Exterior angle theorem
Inscribed angle theorem.

I think 7 bags do 31.5 m squared
2(-20)+3[5/4(-20)]
-40 + 3[-25]
-40 + -75
-115
-115 is your final answer.
A point? I am not sure if ur talking about 2d or 3D