Problem:
Many television screens are rectangles that are measured by the length of their diagonals. The ratio of the horizontal length to the height in a standard television screen is . The horizontal length of a "inch" television screen is closest, in inches, to which of the following?
Answer Choices:
A.
B.
C.
D.
E.
Solution:
The height, length, and diagonal are in the ratio . The length of the diagonal is , so the horizontal length is
Answer: .
The problems on this page are the property of the MAA's American Mathematics Competitions