Problem P. 3825. (October 2005)
P. 3825. By what amount does the area of a 20Forint coin increase, if its diameter at 20 ^{o}C is 26.3 mm, and in our pocket its temperature increases to 35 ^{o}C. (The coefficient of linear expansion is =1.84^{.}10^{5} ^{o}C^{1}.)
(3 pont)
Deadline expired on 11 November 2005.
Statistics:
360 students sent a solution.  
3 points:  259 students. 
2 points:  55 students. 
1 point:  23 students. 
0 point:  2 students. 
Unfair, not evaluated:  21 solutions. 
