Răspuns :
1) V = L × l × h
210cm = 2,1m
V = 10×16×2,1
V = 336 m³ = 336 000dm ³= 336 000l
2) V cub = l²
V = 75²
V = 5625 cm³ = 5, 625 dm³=5,625l
3) A card = 1,80 × 40
Arie gard = 72m² = 720000cm²
1m²..........0,02g vopsea
720000..... x g vopsea
x = 720000·0,02
x = 14400g vopsea = 14,4 KG vopsea.
4) V = 26,6l = 26,6dm³
L = 2dm
l = 19cm = 1,9dm.
V = L × l × h
26,6 = 1,9 × 2 × h
26,6= 3,8×h
h=26,6 : 3,8
h=266:38
h= 7dm
210cm = 2,1m
V = 10×16×2,1
V = 336 m³ = 336 000dm ³= 336 000l
2) V cub = l²
V = 75²
V = 5625 cm³ = 5, 625 dm³=5,625l
3) A card = 1,80 × 40
Arie gard = 72m² = 720000cm²
1m²..........0,02g vopsea
720000..... x g vopsea
x = 720000·0,02
x = 14400g vopsea = 14,4 KG vopsea.
4) V = 26,6l = 26,6dm³
L = 2dm
l = 19cm = 1,9dm.
V = L × l × h
26,6 = 1,9 × 2 × h
26,6= 3,8×h
h=26,6 : 3,8
h=266:38
h= 7dm
a)V=abc=10*16*2.1=336000l
c)h=1.80m=180cm
l=40m=4000m
S=ab=180*4000=720000cm
720000*0.02=14400g=14.4kg
c)h=1.80m=180cm
l=40m=4000m
S=ab=180*4000=720000cm
720000*0.02=14400g=14.4kg