The circumference of a circle can be obtained using the formulae
If the radius of the circle is given:
If the diameter of the circle is given:
From the first circle given
The radius (r) is given to be = 11.5m
Hence, the circumference of the circle is
Hence, c = 72 meters
For the second circle
We were given the diameter of the circle = 12m
Hence, the circumference of the circle is
Hence, c = 38 meters
For the third circle
The radius of the circle = 24m
Hence, the circumference of the circle is
Hence, c = 151 meters