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C. 1319. The midpoints of the sides of a quadrilateral form a square. The area of the quadrilateral is 50, and two opposite sides are 5 and $\displaystyle \sqrt{85}\,$. How long are the other two sides?

(5 points)

Deadline expired on 10 December 2015.

Statistics on problem C. 1319.
 129 students sent a solution. 5 points: 69 students. 4 points: 19 students. 3 points: 5 students. 2 points: 5 students. 1 point: 6 students. 0 point: 23 students. Unfair, not evaluated: 1 solution. Unfair, not evaluated: 1 solution.

• Problems in Mathematics of KöMaL, November 2015

•  Támogatóink: Morgan Stanley