13 Zamień na: a) centymetry kwadratowe (cm2): 600 mm2, 2 dm2, 4 m2, 1 m2 12 cm2 b) metry kwadratowe (m2): 500 dm2, 2 a, 4 ha, 30 000 cm2; c) hektary (ha): 7 km2, 800 a, 50 000 m2, 2 km2 4 ha.

Proszę z rozpisaniem np. 1 m²= 1×m×m=10.000

Question

Rozwiązane

Odpowiedź :

Vivigo Vivigo · Answer 1

Zamień na:

a) centymetry kwadratowe (cm²):

600 mm² = 600 : 100 cm² = 6 cm²,
bo 1 cm² = 10 mm · 10 mm = 100 mm²

2 dm² = 2 · 100 cm² = 200 cm²,
bo 1 dm² = 10 cm · 10 cm = 100 cm²

4 m² = 4 · 10000 cm² = 40000 cm² ,
bo 1 m² = 100 cm · 100 cm = 10000 cm²

1 m² = 1 · 10000 cm² = 10000 cm² ,
bo 1 m² = 100 cm · 100 cm = 10000 cm²

12 cm² = 12 cm²

b) metry kwadratowe (m²):

500 dm²= 500 : 100 m² = 5 m²,
bo 1 m² = 10 dm · 10 dm = 100 dm²

2 a = 2 · 100 m² = 200 m²,
bo 1 a = 100 m²

4 ha = 4 · 10000 m² = 40000 m²,
bo 1 ha = 10000 m²

30000 cm² = 30000 : 10000 m² = 3 m²,
bo 1 m² = 100 cm · 100 cm = 10000 cm²

c) hektary (ha):
7 km² = 7 · 100 ha = 700 ha,
bo 1 km² = 100 ha

800 a = 800 : 100 ha = 8 ha,
bo 1 ha = 100 a

50 000 m² = 50000 : 10000 ha = 5 ha,

bo 1 ha = 10000 m²

2 km² = 2 · 100 ha = 200 ha,
bo 1 km² = 100 ha

4 ha = 4 ha