i dont understand this at all, please dont give me an answer i just need someone to explain it to me if so, thank you <3
![i dont understand this at all please dont give me an answer i just need someone to explain it to me if so thank you lt3 class=](https://us-static.z-dn.net/files/da0/5e9a125f56c180d07a0facf9940a4abb.jpg)
Answer: Multiply the diameter by Pi, which in school lessons usually just use 3.14
Step-by-step explanation:
So 3.14 multiplied by the diameter of 9.
please mark brainliest