First to completly answer will be marked brainliest if you give a random answer just to get points you will be reported

Pi: Irrational

2/9: Rational

225: Rational

0.167: Irrational  <--- fourth one

Step-by-step explanation:

Not sure about the 4th one, but the others are good :)

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:

you can first factor out the n to get n(1+5). we know that 1+5 is 6, so we just have 6n.