Question

Va rog foarte multttttt,mersi:)))

Answer 1

5.

A=l•L=>L=A/l=1500/50=30 m

6.

Ap=lp^2=30^2=900 cm^2

A=150•Ap=135000 cm^2

7.

A=l•L=400•50=20000 m^2=2 ha

1 ha..............250 kg

2 ha..............x kg

x=2•250/1=500 kg