An envelope is pulled apart to create this figure. what is the total surface area of one side of the envelope?

Since the top and the bottom triangles have an area of 9cm and the left and right triangles have an area of 4cm and the rectangle has an area of 24. The final area would be 50 cm^2 . 

Answercounterclockwise rotation about the origin by 180 degrees followed by reflection about the y-axisexplanationthe given figure has verticesrecall that for counterclockwise rotation about the origin, when we rotate figure pqrs counterclockwise through an angle of 180° about the origin, the coordinates will becomenext, we reflect in the y-axis by negating the x-coordinates of the resulting figure to obtain,therefore the correct answer is c