What rank do you have to be to use inbox?

Hey there! I think you can only private message moderators now.

Explanation:

On March 16, 2018, removed private messaging and comments from profiles. If you want to know more details on why removed them, go to this link. I hope this helps :).

the figures below are made out of circles, semicircles, quarter … find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations). remember that we'll also have to cut whatever areas we get in half, since we're only dealing im pretty sure that is the right answer

step-by-step explanation:

225x²+4=0

225x²=0-4

225x²=-4

x²=-4/225

x=±√-4/225