Answer:
B. 171.74 cm²
Step-by-step explanation:
Area of a sector =
.
Where,

radius (r) = 8.7 cm
Plug in the values into the formula
Area of sector = 
Area of sector = 
Area of sector = 171.74 cm² (approximated)
Collect the like terms
So 3n-n=2n and -1+4=3
(3n-1)+(4-n)=2n+3
Answer:
4/5 is greater
Step-by-step explanation: