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Answer:
radius
20
17.5
Diameter
48
69
circumference
150.72
125.6
109.9
216.66
Explanation:
Yung radius kalahati ng diameter
ang circumference
To calculate the circumference of a circle, multiply the diameter of the circle with π (pi). The circumference can also be calculated by multiplying 2×radius with pi (π=3.14).
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