Please help asap, for an upvote

Graphic programming raises a number of concerns. a) What are the three most important issues to consider? A geometric method of creating the Sierpinski gasket is to start with a triangle and cut out the middle piece. This results in three smaller triangles. The process is continued for the smaller triangles indefinitely. b) If the area of the original triangle is 1, how much of the area of the triangle is removed after the third iteration? c) Find an algorithm that describes your solution?