Select all of the number that round to 4.3 when rounded to the nearest tenth

Could somebody me with this radical simplification?

72 the length of a side of a triangle is 36. a line parallel to that side divides the triangle into two parts of equal area. find the length of the segment determined by the points of intersection between the line and the other two sides of the triangle.

Ineed to know the ordered pairs for this equation i need the answer quick because it’s a timed test