Answer:
idk
Step-by-step explanation:
the first one is correct
Use formula:
Solving for diameter:
✍︎ꕥᴍᴀᴛʜᴅᴇᴍᴏɴǫᴜᴇᴇɴꕥ
✍︎ᴄᴀʀʀʏᴏɴʟᴇᴀʀɴɪɴɢ
The equation of a circle with center and radius is
In your case,
Plug these values into the generic formula and you'll get your equation.