Answer:
V(volume) =84.82
Step-by-step explanation:
V=πr2h
3=π·32·9
3≈84.823 (Rounding it)
I think its the first one (x+5,y+6)
Here
Just pick numbers and substitute it into the equation for x
5x(5x+1)^2
= 5x(25x^2+10x+1)
= 125x^3+50x^2+5x