2007 Cyprus MO/Lyceum/Problem 7
Revision as of 13:41, 6 May 2007 by I_like_pie (talk | contribs)
Problem
If a diagonal of a rectangle forms a
angle with one of its sides, then the area of the rectangle is
Solution
Using 30-60-90 triangle ratios, the lengths of the sides are and
.
The area of the rectangle is .