For circumference it’s 12x3.14= 37.68
Answer:

Step-by-step explanation:
×
Answer:
9600
Step-by-step explanation:
80 times 60 times 2
Answer: 27
Step-by-step explanation:
use the formula for the area of circle and solve for r: A=pi r^2
2290.221=pir^2 <---divide by pi
729=r^2 <--- square root both sides
27=r
Two of the points are (0,0) and (1,6)