Question

y is a circle called 2 dimensional figure??​

Answer 1

According to a rule in geometry, the dimension of an object made up of n dimensions is n+1. ... When you talk about the area of a circle, you mean the circle as a two-dimensional figure. The other meaning is that a circle is just the curve, the circumference of the two-dimensional figure of the first meaning.

Answer 2

This is because 3-D figure has length, breadth as well as height also, Since circle it doesn't have length breadth and height it is considered as 2D figure.