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17. What's the circumference of a circle with a diameter of 30 centimeters?
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17. What's the circumference of a circle with a diameter of 30 centimeters?

User Daniel Serodio
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2 Answers

6 votes
30 multiplied by 3.14
User Qimolin
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6.3k points
3 votes

Circumference of circle=2πr

Where r=radius

2r=d

d=diameter

So,2πr=πd

Note,π=227

In this statement,c=circumference

→c=πd

→c=π(30)

→c=π30=227(30)

→c=6607=94.28...

Circumference is 94.28...cms

User Keith Stein
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6.6k points
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