Question

Как вычислить длину окружности, диаметр который равен 10 см; 2, 5 см.?

Answer 1

L=2πR=πd (d=2R)
 1. l=10*π=10π
 2. l=2,5*π=2,5π

Answer 2

Calculating the Circumference of a Circle with a Diameter of 10 cm

To calculate the circumference of a circle when the diameter is 10 cm, you can use the formula C = π * d, where C is the circumference and d is the diameter.

Using the given diameter of 10 cm: C = π * 10

The value of π is approximately 3.14, so: C = 3.14 * 10 C = 31.4 cm

Therefore, the circumference of a circle with a diameter of 10 cm is 31.4 cm.

Calculating the Circumference of a Circle with a Diameter of 2.5 cm

Similarly, to calculate the circumference of a circle when the diameter is 2.5 cm, you can use the same formula C = π * d.

Using the given diameter of 2.5 cm: C = π * 2.5

The value of π is approximately 3.14, so: C = 3.14 * 2.5 C = 7.85 cm

Therefore, the circumference of a circle with a diameter of 2.5 cm is 7.85 cm