Question

Matematica , varianta a 2 a ,raspunsuri , va rog !!!

Answer 1

1) miligram-masa
    hectar-arie
    decimetru cub-volum
    deceniu-timp
2) 10 lei, 50 bani
a) lungime 34000mm=34m
    arie:  200ari=20000m*m
    masa: 1.2g=0.0012Kg
    $volum: 0.5cm^{3}=0.0000005 m^{3}$
3) a) $V=h*l*L=4.5*8*5=180m^{3}$
b) $A_{gresie}=l*l=1dm*1dm=0.01m^{2}$
$A_{bazin}=l*L=5*8=40m^{2}$
$Nr placi=\frac{A_{bazin}}{A_{gresie}}=\frac{40}{0.01}=4000$
c) $timp=10:05-0+24:00-23:20=10:05+00:40=10:45$ 10 ore si 35 de minute

Answer 2

O bacnota de 10 lei poate fi schimbata cu 20 de monedw a cate 50 bani