How do I calculate the volume???

Which statement accurately explains whether a reflection over the x-axis and a 180° rotation would map figure acb onto itself?

If you could answer these your a life saver

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.