Răspuns :
Aria= lxl
l- latura
Aria=12.5x12.5
Aria=156.25 hm patrati
P=4xl
P=4x12.5
P=50 hm
b)Aflati aria si perimetrul unui dreptunghi cu lungimea de 18,72m,iar latimea de trei ori mai mica decat lungimea.
L=18.72
l=18.72:3
l=6.24
Aria= Lxl
Aria=18.72x6.24
Aria=116.8128 m patrati
P=l+l+L+L
P=6.24+6.24+18.72+18.72
P=49.92 m Bafta!:)
P=4l
P=4*12,5=50 hm
A=l²
A=12,5²=156,25 hm
P=2(L+l)
l=18,72:3=6,24 m
L=18,72m
P=2(18,72+6,24)
P=49,92 m
A=L*l
A=18,72*6,24=116,8 m²
P=4*12,5=50 hm
A=l²
A=12,5²=156,25 hm
P=2(L+l)
l=18,72:3=6,24 m
L=18,72m
P=2(18,72+6,24)
P=49,92 m
A=L*l
A=18,72*6,24=116,8 m²