Question

If the circumference of a circle is 30π units what is it's diameter?

Answer 1

Answer:

circumference = 30π

2πr = 30π

2r = 30

diameter = 2r = 30

so answer is 30...

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Answer 2

Answer:

2pi r =30

2r = 30

r = 30/ 2

r= 15

diameter = 15 × 2

= 30

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