The radius of a circle is 8 meters.

The diameter of the circle is .
The formula for circumference is C = πd or C = 2πr.

The circumference of the circle is approximately .

Diameter is 16 meters and Circumference of the circle is approximately 50.3 meters

Step-by-step explanation:

If radius is 8 m,

the diameter is 2 radius = 2*8 = 16 m

Circumference C =

= (22/7)*16

= 352/7

≈ 50.3 m

from the figure we get,

the x axis shows   the months and,

the y-axis shows the number of satisfied customer.

each line or each cell in upward direction (y-axis) shows 500.

the appropriate scale for the y - axis is: -

a = 2000 customers

b = 4000 customers

c = 6000 customers

d = 8000 customers

e = 10000 customers

f = 12000 customers

g = 14000 customers