Problem P. 4754. (September 2015)
P. 4754. 4 litres of water at a temperature of \(\displaystyle 30\,^\circ\)C is poured into a copper hemisphere shaped container of volume \(\displaystyle 4~{\rm dm}^3\). The temperature of water decreases by \(\displaystyle 3\,^\circ\)C, whilst the temperature of the container increases by \(\displaystyle 27\,^\circ\)C. What is the width of the wall of the container?
(4 pont)
Deadline expired on 12 October 2015.
Statistics:
150 students sent a solution.  
4 points:  107 students. 
3 points:  32 students. 
2 points:  8 students. 
1 point:  2 students. 
0 point:  1 student. 
