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3 years ago

If the diameter of a circle is 9 cm, then its circumference is 56.52 cm. True or false?

Mathematics

1 answer:

Brrunno [24]3 years ago

3 0

Circumference
2*pi*r
2*(22/7)*(9/2)
2*(11/7)*9
198 / 7
28.28 cm

so 56.52 is not correct

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