Answer:
Step-by-step explanation:
B is the answer pretty sure
It is natural
circumference =2×pi×r
18/2=9(r)
so...2×pi×9
=54..5
x = 1/9m good luck........
2-9=x
HOW
let the number be x
then 2 less than product 9
so
2-9
and a number
we don,t know number so take it x
so 2-9=x