<span>
арифметическая прогрессия<span><span>
116
</span>
<span>
145
</span>
<span>
174
</span>
<span>
203
</span>
<span>
232
</span>
<span>
261
</span>
<span>
290
</span>
<span>
319
</span>
<span>
348
</span>
<span>
377
</span>
<span>
406
</span>
<span>
435
</span>
<span>
464
</span>
<span>
493
</span>
<span>
522
</span>
<span>
551
</span>
<span>
580
</span>
<span>
609
</span>
<span>
638
</span>
<span>
667
</span>
<span>
696
</span>
<span>
725
</span>
<span>
754
</span>
<span>
783
</span>
<span>
812
</span>
<span>
841
</span>
<span>
870
</span>
<span>
899
</span>
<span>
928
</span>
<span>
957
</span>
<span>
986
</span>
</span></span>
Радиус шара будет равен половине длины ребра куба. это же очевидно!
7ге эселик 35. 61-35=26
26:13=2