C=

d.
If 5m is the radius, then multiply it by 2, then multiply it by

.
If 5m is the diameter, then just multiply it by only

.
80$ won't be enough to pay
He would like need 6 more cents
he needs 80.06$
because
324x80=25920 if you put them on top of each other like so...
324
x80
____
25920
Answer:
Three ppl, Twelve dogs
Step-by-step explanation
x=hoomans
y=doggos
x+y=15
2x+4y=54
x=15-y
2(15-y)+4y=54
30-2y+4y=54
2y=24
y=12
so that means there are 12 doggos
and since x=15-y, which is 15-12, which is 3,
there are three hoomans