Answer:
C=2πr
Step-by-step explanation:
I need to see the circle, but this is the formula, you plug the radius into r and solve:)
There are no answers here, but the slope of the line in that equation is -12. So the slope of the line that is parallel will also have a slope of -12 since parallel lines always have the same slope.
we need some barriers such that total of length of all barriers should equal to the circumference of the circle.
so lets assume we need x barriers
then total length of all barriers = 2.5x meter
now radius of circular path = diameter / 2= 13/2 = 6.5 meter
circumference of path = 2× pi × r = 2 × 3.14 × 6.5
=40.82 meter
so now as per statement
2.5x = 40.82
x = 40.82/2.5 = 16.328 ≈ 17
so approximately 17 barriers are required
