Răspunsuri

2014-07-07T15:20:28+03:00
P=2l+2L

L=2l

P=2l+2*2l=60

2l+4l=60
6l=60
l=10

L=2*10=20

A dreptunghiului=L*l=20*10=200cm²

A unui patrat=l²=2²= 4cm²

200:4=50 de patrate poate contine dreptunghiul


2014-07-07T15:21:29+03:00
P=60
L=2l
P=2L+2l=2*2l+2l=6l=>6l=60=>l=10=> L=2*10=20
Aria dreptunghi=10*20=200
Aria patrat=2*2=4
200/4=50 de patrate