A cylinder has two circles as its bases.
They are congruent circles
A rectangle and two circles.
2
it intersects the segment joining the centers of two circles
cylinder
They are congruent circles
Two circles with a square on top
The ratio of 2 circles and 3 triangles can be expressed as : 2 : 3.
well in fact the difference is one has 2 circles and one has 3
concentric circles
A rectangle and two circles.
2 circles can be congruent. The have to have the same radius.
draw 2 circles the same size
A cylinder
The ratio of two circles to three triangles is not a straightforward comparison as circles and triangles are different shapes. However, if we are comparing the areas of two circles to the combined areas of three triangles, we would need to calculate the area of each shape using their respective formulas (πr^2 for circles and 1/2 base x height for triangles) and then compare the total areas. The ratio would then be the total area of the circles divided by the total area of the triangles.
2
you can have 2-3 circles, but for heavy information you can have 5 circles. I'm not sure if there can be more i would have to look into that.