Samabueno123 Samabueno123

26-08-2016
Mathematics

contestada

If the diameter of a circle is 9 cm, then its circumference is 56.52 cm.

True or false?

Respuesta :

Kunchan Kunchan

26-08-2016

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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