Proportions and scale factor

3 inches of the Length of the corresponding to an acctual length of 27feet

The dimensions of the blueprint basketbal court are 12.5 inches length by 6 inches height

One can of paint covers 380 square feet

1) what is the scale factor from the blueprint to the actual gym wall

2) what is the actual dimension of the wall length in feet

3) what is the actual dimension of the wall height in feet

4) what is the square footage (area) to be covered with the paint

5) how mamy cams of paint will you need to buy to finish the project