Step-by-step explanation: To find the circumference of
the circle shown here, start with the formula c = 2πr.
Since the radius is 2 km, we can plug is 2 km for r in the formula.
So we have (2)(π)(2 km) which is equal to 4π km.
Now, remember that π is approximately equal to 22/7 or 3/14.
So we can estimate the value of the
circumference by plugging in 2.14 for π.
So we have (4)(3.14) which is equal to 12.56.
So the circumference is approximately equal to 12.56km.
