Answer:
Slope of line is 

Explanation:
Given that the company logo has four concentric circles.
To plot the line on the graph take point as ( Diameter, Circumference )
Circumference of a circle is given by C=

Where D is the diameter.
To draw a line, we need at least two-point.
Now, 
Take D=1
Circumference of a circle will be C=

Required point is (1,
 )
)
Take D=0
Circumference of a circle will be C=

Required point is (0,0)
The slope of line is given by s=

Hence,
s=

s=
![\frac{0-[tex]\pi]() }{0-1}[/tex]
}{0-1}[/tex]
s=
![\frac{[tex]\pi]() }{1}[/tex]
}{1}[/tex]
s=

Thus, Slope of line is 
