Răspunsuri

2014-05-21T20:42:12+03:00
1)P= 22m
P= 2l+2L
22=2l+2*7
22=2l+14
2l=22-14
2l=8
l=4
2) A patrat=l patrata
radical 36=l
l=6
P=4l
P=4*6=24
2 1 2
2014-05-21T20:47:10+03:00
X-imnultit
1.
P=2l+2L
22m=2l+2x7m
22m=2l+14m
2l=22m-14m
2l=8m
l=8m:2
l=4m
L=7m
l=4m
A=Lxl
A=7mx4m
A=28 m^{2}

2.
0,36 m^{2} =36 cm^{2}
A= l^{2}
36 cm^{2} = l^{2}
l=6cm
P=l+l+l+l
P=4l
P=4x6cm
P=24cm
3 3 3