Yes.
Yes
Change in height and circumference
If the two circles are tangent to each other,then it must be at the same point.
Area=pi times radius squared Circumference=pi times diameter or pi times radius times two
Yes.
Yes.
Yes
YES!!! THey would be congruent circles; tjhat is appear to be the same size.
They are said to be concentric circles.
No, the two are quite different things.
Two figures are congruent if you can "pick one up" and then place it down on top of the other one in such a way that the two exactly overlay each other... in other words, if they are the exact same shape and size. So, any two circles will always have the same shape, but not necessarily the same size. Only circles that have the exact same size (as measured by matching radius, diameter, circumference, or surface area) are congruent.
Change in height and circumference
congruent circles
Concentric circles
If the two circles are tangent to each other,then it must be at the same point.
Yes.