It should be 31.41 bc the equation is 2•pi•radius
5y+45=180
5y=135
y=135/5
y=27
Answer: it’s a
Step-by-step explanation:
Cause I think it’s is
Answer:
I think its A
Step-by-step explanation:
The graph shows its number are getting greater than -4 and i think solid dots mean greater than or equal to the number
The area of the circle by definition is given by:

For f (r) = 154:

Clearing r we have:

For f (r) = 616:

Clearing r we have:
Answer:
a reasonable domain for f (r) is:
7 <r <14