Answer:
multiply by 3
Step-by-step explanation:
56.52
c=2r
C=2*3.14*9
C=56.52
8/-7
using the equation: y₂-y₁/x₂-x₁
10-2/0-7 = 8/-7
15.05
Also, you don't need to add the zeros, they don't mean anything.
2 2/3