Answer:
Step-by-step explanation:
Use Pythagorean to find the required length
Dotted line is the diagonal of the rectangle, let it be d
Missing side of the rectangle is the hypotenuse of the right triangle, let it be a
- d² = a² + 9² = 9² + 7² + 81 = 130 + 81 = 211
- d = √211 = 14.5 (rounded)
