Question

Ce masa are o caramida cu densitatea 800kg/m3 daca are urmatoarele dimensiuni: L=30cm l=15cm h=6cm

Answer 1

[tex]\tt Se~da:\\ \\ \rho=800 \frac{kg}{m^{3}}\\ \\ L=30cm=0,3m\\ \\ l=15cm=0,15m\\ \\ h=6cm=0,06m\\ \\ m=?kg\\ \\ \\ Formule:\\ \\ m=V\times \rho\\ \\ V=L \times l \times h \Rightarrow m=L\times l\times h\times \rho\\ \\ \\ Calcule:\\ \\ m=0,3 \times 0,15 \times 0,06 \times 800=2,16kg[/tex]

Answer 2

ro=masa supra volum
800kg/m3=m:v
v=L×l×h=30×15×6=30×90=2700cm
800kg/m3=m:2700cm
m=800×2700kg
m=2160000kg
Sper ca ce bine. Mai asteapta raspunsuri.