685,000,000 would be the right number. Hope this helps!
2 would be the base and 3 will be the square
It is 18 because the radius is half the diameter and 9 x 2 = 18.
Answer:x= -11 or x= 11
Step-by-step explanation:tell me if you need more explaining
You can go full 2π rotate around counterclockwise so the angle wouldn't be negative.
So -π/2 + 2π = -π/2 + 4π/2 = 3π/2
So (4, 3π/2) is the same point as (4, -π/2)
