Answer:
20 I think
Step-by-step explanation:
I mean I would say it is 20

Then

which is a disk of radius 1, hence with area
.
Answer:
x=6 2/5
Step-by-step explanation:
I don't know how to explain other than doing the math of (x*5)/2=16
Answer:
Step-by-step explanation:
If it is irrational, it can never be rational unless it is acted upon by something else like a power.
Pi, no matter what is done to it, can never be rational. Once a number is declared as irrational, that is what it remains.
Answer:
So find the what?
Step-by-step explanation: