Find the circumference of a circle with a radius of 5 cm, the diameter of which is 10.6 dm.

As we know from the school curriculum, the circumference is calculated using the following formula:

P = 2πr, where r is, in fact, the radius of this circle.

Let us determine what value the circumference will be equal to if from the condition of our problem we know for sure that its radius is 5 centimeters:

2 * 3.14 * 5 = 31.4.

Answer: 31.4 cm.

Let us determine what value the circumference will be equal to if from the condition of our problem we know for sure that its diameter is 10.6 dm:

2 * 3.14 * 10.6: 2 = 33.284.

Answer: 33.284 dm.