I believe your mistake is that you are trying to use the sector area formula ti find arc length when there is already a formula for it.
The formula for it is

So first substitute the values in and then simplify!

Now simplify!
21 × 118 is 2478 so it's

When divided ou and multiplied, this is 21.62cm!
Answer:
(2,-2)
Step-by-step explanation:
The midpoint of the line segment with endpoints
and
has coordinates

If the endpoints of the line segment are (-2,5) and (6,-9), then the midpoint has the coordinates

Answer:
B. The lines AB and BC are perpendicular.
Step-by-step explanation:
If all the points are doubled on the x-axis, they are perpendicular.
hope this helps.
Answer:
what do you mean by models? equations or experiments?
Step-by-step explanation:
Y= -3x+17
Y-y1= m(X-X11)
-3 is m
5 is X1
2is Y1
Y-2=-3)X-5)
Y-2= -3x+15
Add2
Y=-3x+17