Question

Va rog frumos!! O scandura din lemn cu densitateao,7g/cm3 cantareste 6,3kg.Stiind ca scandura are latimea 15 cm si grosimea 2cm calculati lungimea ei.

Answer 1

$m=6,3kg=6300g$

$V=\frac{m}{\rho}$

$V=900cm^3$

$V=Llh=\textgreater L=\frac{V}{lh}=30cm$