Use the diagram below to answer the question.
Diagram showing two adjacent rectangles (squares) sharing a common height. The left rectangle has an area of 1600 m2 and its base is labeled x. The right rectangle has an area of 900 m2 and its base is labeled y.
The area of each square is given in the diagram. What is the value of x+y?
A. 30 meters
B. 40 meters
C. 70 meters
D. 120 meters