What is the length of the circumference of a circle with a diameter of 8cm? Use: pi = 3

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11-09-2015
Mathematics

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What is the length of the circumference of a circle with a diameter of 8cm? Use: pi = 3

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Anonymous Anonymous · Answer 1 · 2015-09-11T14:45:12-04:00

Anonymous Anonymous

11-09-2015

\(C\propto d\\ \\ \therefore \quad C=kd\)

When d=1, C=π, therefore:

k=π.

Therefore:

C=πd

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Answer:

When d=8 cm,

C=8π cm

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AL2006 AL2006 · Answer 2 · 2015-09-11T14:59:45-04:00

AL2006 AL2006

11-09-2015

The circumference of a circle is (pi) x (diameter).

If pi were 3, then a diameter of 8 cm would mean circumference = 24 cm.

But 3 is 4.5% too small for pi.

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