Arectangle made of square tiles measures 8 tiles wide and 10 titles long. what is the length in tiles in tiles of a similar rectangle 12 tiles wide?

The picture below shows president richard nixon and the first lady standing before the great wall of china in 1972. they are smiling - as are the chinese with them. when this picture was shown on american television, americans were aware that it was a historic moment. what are two reasons why this moment was important for both china and the united states?