Răspunsuri

2014-02-01T09:08:52+02:00
V = ( Aria bazei x inaltimea ) : 3

Aria bazei =  \frac{l^{2} \sqrt{3} }{4} =  \frac{9 \sqrt{3} }{4}

Inaltimea =  \frac{l \sqrt{6} }{3} =  \frac{3 \sqrt{6} }{3}  =  \sqrt{6}

V = \frac{\frac{9 \sqrt{3} }{4}* \sqrt{6}}{3} =  \frac{9 \sqrt{18} }{12} =  \frac{27 \sqrt{2} }{12} =  \frac{9 \sqrt{2} }{4}     cm^{3}
3 3 3