Please awnser these (sourse: eureka math grade 6 module 4 lesson 5 problem set) ​

The polygon tool to draw a rectangle with a length of 5 units and a height of 3 units. one of the sides of the rectangle falls on line ab , and the rectangle has a vertex of a. each segment on the grid represents 1 unit.

Which of the following is a justification used while proving the similarity of triangles lom and mon

The base of a triangle is 8 1 3 meters and the height of the triangle is the fourth root of 16 meters meters. what is the area of the triangle?