Mathematics, 23.07.2019 01:50, jamesmith20

The radius of a circle is 9. using π, which equation expresses the ratio of the circumference of the circle to the circle's diameter? a) c /9 = π b) c /18 = π c) c = 9π/r d) c = r /18π

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The radius of a circle is 9. using π, which equation expresses the ratio of the circumference of the...