# ratios. So: pi: ratio of the circumference of a circle to its diameter. Rate: A rate is a special form of ratio￼ where the the two terms are in different units. ￼￼￼ a circumference￼ and a diameter, despite both being “of a circle”, is it possible that we are using the wrong units for circumference? this would make sense because the shape of the “line” of a circumference￼￼￼ is different from the shape of the line of the diameter: The underside of a curve is different from the outer side of a curve. but there is no difference between the underside of a straight line and the outer side of a straight line. i’m stating something obvious probably: it sounds like this is what calculus deals with – but perhaps a rate is needed instead of a basic ratio. ￼￼￼￼ ￼

ratios.
So: pi: ratio of the circumference of a circle to its diameter.
Rate:
A rate is a special form of ratio￼ where the the two terms are in different units. ￼￼￼

a circumference￼ and a diameter, despite both being “of a circle”, is it possible that we are using the wrong units for circumference?

this would make sense because the shape of the “line” of a circumference￼￼￼ is different from the shape of the line of the diameter:

The underside of a curve is different from the outer side of a curve.

but there is no difference between the underside of a straight line and the outer side of a straight line.

i’m stating something obvious probably: it sounds like this is what calculus deals with – but perhaps a rate is needed instead of a basic ratio.
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