54 percent
You add the two together to get 39, then divide 21 by 39. This gives you 0.538, which turns into 54%
The area of the rectangle is simply width times length.
Hence, A = w*l = (6/5)*12 = 72/5 = 14.4 square inches (ANSWER)
You add the previous 2 numbers so the answer would be 162