Hexagon has six edges. The figure you're trying to figure out is hexagon I guess.
Answer:
87.92
Step-by-step explanation:

c= Circumference
d= Diameter

It is pretty much 0.0005990783 I don't know how I will figure it out
Answer:
9/2
Step-by-step explanation:
f(x)=5-1/2
plug in 4
f=9/2
9/2
Answer:
$5.99
Step-by-step explanation:
5.6*1.07
1.07 is the tax plus the original price
is 5.992
which rounds up to $5.99