For this question, the formula for finding area will be used. This formula is area = width * height. We'll plug the values given to us in to find the missing height. 53.3 = 6.5 * h. Then we solve for h. h =8.2. After that, we can solve perimeter using the correct equation. width*2 + height*2 = Perimeter. 6.5*2 + 8.2*2 = P, 13 + 16.4 = P, 29.4 = P. So the answer is 29.4.