i lose 5 points by asking tis one. but it should be worth it right. so be worthy for getting 2 points.?

Question

how can you say that the ratio between the circumference and the diameter of the circle is always is a constant?

Answer 1

It's probably just axiomatic. No mathematical system is without axioms. But certainly if the circumference is changed the diameter must change too, and proportionately, so whatever their relationship was, that relationship must remain. Not really a proof though.

Answer 2

In mathematics we know pi = 22/7, is a constant.

Now, we also know that circumference of a circle C = pi x D, D is the diameter of that circle

So, we get the ratio of circumference to Diameter of the same circle C/D = pi = constant.

Answer 3

Simply put, no matter what size the circle is, as long as it is a perfect circle the ratio between circumference and diameter will remain the same. As you increase the circumference, the diameter also increases by the correct equivalent amount.

Answer 4

Like this:
"The ratio between the circumference and the diameter of the circle is always is a constant."

See how easy that was? ☺


Doug

Answer 5

Use the formula C = πd (C=circumference, d=diameter)

Or say the ratio of the circumference to the diameter is always π

Answer 6

because the diameter is a part of the circle. As the diameter increases, the circumference also increases...

Answer 7

Its not that someone would say that,
but you can actually prove it.
First, find a bunch of jars with circular caps, Measure their diameters as close as possible.
now, take some masking tape, use it to measure the circumference .. do this for each circular cap..
take the ration of C to Diameter....
if measures are very acurate, they should approximate 3.1415......or Pi! this constant is know as Pi..

hope that helps..

Answer 8

You say "the circumference of a circle is directly propotional to its diameter."

Answer 9

You unfastened 5 factors for each question you ask. you will get 3 factors lower back once you %. the appropriate answer you acquire. That way it in user-friendly terms expenses you 2 factors to invite a query. Neat Ah. It has continuously been this form.

Answer 10

dude!
i thought the circumference is the product of phi and diameter?
c = (phi) x d
so the ratio c/d is ALWAYS phi (=22/7=3.14...)