L=lungimea
l=latimea
h=inaltimea paralelipipedului
L²+l²=425
L²+h²=416
h²+l²=41
adun cele 3 relatii:
2(L²+l²+h²)=882,
L²+l²+h²=441
h²=441-425=16, h=4
L²=441-41=400, L=20
l=441-416=25, l=5
V=L*l*h=20*5*4=400
lungimea diagonalelor=
√41+4√26+5√17raportul cerut=400/(√41+4√26+5√17)