Final answer:
The circumference of a circle with a diameter of 14 kilometres is 43.96 km when using the approximation π ≈ 3.14 and rounding to the nearest hundredth.
Step-by-step explanation:
The circumference of a circle can be found using the formula C = πd, where C represents the circumference and d is the diameter of the circle. Given that the diameter is 14 kilometres and using the approximation π ≈ 3.14, the circumference can be calculated as follows:
C = πd = 3.14 × 14 km = 43.96 km
When rounded to the nearest hundredth, the circumference is 43.96 km.
For a better check of your learning, compare this with Earth's diameter which is about 12,700 km. This makes the circumference of Earth much larger in comparison to the given circle's circumference.