Question

1.Se cunoaște L=4, l=3, v=60 . Calculați h,At,d (paralelipipedul dreptunghic)
2.Paralelipipedul dreptunghic are l=2, h=9, At=168 . Calculati L,V,d

Answer 1

1) V=L*l*h => 60=4*3*h=> h=60:12=5
At=2(lh+Lh+lL)=2(3*5+4*5+4*3)=2(15+20+12)=2*47=94
d la puterea2=l la puterea 2 +L la puterea 2 +h la puterea 2=3 la putere 2+4 la puterea 2+5 la puterea 2=9+16+25=50=> d=2 radical din 5