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Calculati lungimea diagonalei unui paralelipiped dreptunghic daca :
a) L =12 cm , l=4 cm ,h =3 cm
b) L=12, l=8, h=9
c) L=12 , l=5, h=13 cm


Răspuns :

DIagonala √(l² + L² + h²)
a)√12*12+4*4+3*3=√144+16+9=√169=13
b)√12*12+8*8+9*9=√144+64+81=√289=17
c)√12*12+5*5+13*13=√144+25+169=√338