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3. the mass per unit area of a type of plastic sheet is 2kg per m². state the rate in g per 100 cm²

4. a rubber plantation uses fertiliser at a rate of 250kg per hectare. state the rate of fertiliser consumption in g per m². [ 1 hectare = 10 000m² ]​

Respuesta :

Answer:

Step-by-step explanation:

2kg/m² convert to g/100cm²

1 kg=1000 g

2kg=  ???

2*1000=2000kg

m      ⇒      100cm

m²     ⇒      10000 cm²

2kg/m²=2*1000/(10000/100) cm²

=2000/100 cm²

4- 250kg/hectare

250*1000=250000

1 hectare=10000 m²

250000/10000 g/m²