Question

va rog
..........trebuie sa am 20 caractere asa voi face la fiecare intrebare postata astazi

Answer 1

V=l*L*h=3*2*2,5=15 m³
1 m³.......10 hl
=>15 m³..........150 hl
1 h.........7,5 hl
x h ..........150hl
x=150/7,5= 2o ore sunt necesare

Answer 2

$\mathcal{V}_{bazin}=3\cdot2\cdot2,5=15~m^3 \\ \\ 15~m^3=15~k\ell=150~h\ell \\ \\ t=\frac{\mathcal{V}_{bazin}}{debit}=\frac{150~h\ell}{7,5~h\ell/h}=20~h$