Multiply the diameter by PI which is 3.14 so that means the circumference would be 15.7.
Answer:
The numbers:
1, -3, 2, -9, 3, -15, 4, -21,
are not linear.
Step-by-step explanation:
If it was linear:
4, 3, 2, 1, -3, -9, -15, -21
B:825
Hopes this helps:)