Răspunsuri

2014-05-20T20:32:18+03:00
X-latimea
3x-lungimea
x+3x=400
4x=400
x=400/4
x=100
2014-05-20T20:38:26+03:00
L/3 = l
2L + 2l = 400 m   perimetrul. Inlocuim latimea cu 2L
2L + 2 * L/3 = 400 aducem la acelasi numitor
3 * 2 L+ 2L= 1200
6L + 2L = 1200
8L = 1200     L = 1200/ 8 = 150 m    L = 150 m
l = 150 / 3     l = 50 m
paroba :     150 + 150 + 50 +50 = 400 m