Question

1. Aflati valoarea diagonalei intr'un dreptunghi , l=4 ,  L=8  ; 2. Aflati a si b ,stiind ca a supra b =7 si a+b=16

Answer 1

Am facut valoarea diagonale. :) 

Answer 2

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