Răspunsuri

2014-04-01T22:15:43+03:00
2014-04-01T22:18:21+03:00

²
diagonal d

Pitagora: d²=l²+L² ⇒d²=64+16⇒ d²=80⇒d=4√5

2)a/b=7       

a+b=16⇒a=16-b   ⇒ (16-b)/b=7   ⇒16-b=7b

8b=16

b=2