Question

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

Answer 1

No the circumference of the circle is not 56.52. According to the formula which is pi x diameter all you have to do is multiply 9 times pi which is 3.14. This would equal 28.26cm, not 56.52cm.

Answer 2

Circumference if the circle=
2πr or πd
Substitute the diameter=9cm into second equation
C=9π
C≈9×3.14
C≈28.26 cm. As a result, it is false that the circumference will be 56.52 cm if the diameter eqaul 9 cm. Hope it help!