Report copyright - BAC 2007 Pro–Didacticapro-didactica.ro/articole/examene2007/tnv96-100f.pdfCubul are toate muchiile egale, deci BC +C0D0 = 5+5 = 10 cm. 8. Al = π· g(R +r) = π ·7·10 = 70 πcm2
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