Answer:
Diameter = 7
Radius = 3.5
Step-by-step explanation:
Hi! Ace here.
So, the formula to find circumference is dπ or 2rπ
So to find the diameter, you do the circumference/π
To find the radius, you'd do the circumference/2π
Plug-in those numbers and there you go!
Hope this helps, let me know if you have any questions.
I know this was a very vague explanation so I encourage you to ask any questions. Thank you!
Answer:

Step-by-step explanation:
y = 18 + 3x²
- 18 - 18
__________

I am joyous to assist you anytime.
The sum of two irrational numbers is only sometimes rational... So the answer is D.