What I can make out is, check the picture, that'd be the dimensions of the room.
therefore, the surface area of that room is
2 10x25 rectangles, front and back
2 30x10 rectangles, left and right
and 2 25x30 rectangles, top and bottom
so the area will be (2*10*25) + (2*30*10) + (2*25*30), which gives us 2600 square feet though, not yards.
let's add the doors, windows and others which is 1275, so 2600 + 1275, that gives us 3875 square feet.
now, the paint is 9.5 for square yard, no feet, so let's do some conversion then,
so, if there are 9 square feet in one square yard, how many square yards are there in 3875 square feet?
that's how many yd² are there in 3875 ft².
now, we know for every yd², is $9.50, so then the cost will be