Respuesta :

Answer:

66 cm

Step-by-step explanation:

Diameter of the circle = 21 cm

π = 22/7

Circumference of a circle, C= πD

C = 22/7 * 21

C = 22 * 3 * 7 / 7

C = 22 * 3

C = 66 cm

Answer:

B:66

Step-by-step explanation:

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