Question

Nu stiu sa rezolv problemele 4 si 5.help
ps.dau coroana​

Answer 1

4.

b/B=2/3 =>2B=3b =>B=3b/2

a)L.m.=(B+b)/2=17,5 =>B+b=35

3b/2 + b = 35

3b+2b=70

5b=70 =>b=14 cm =>B=21 cm

b)Segm.=(B-b)/2=2 =>B-b=4

3b/2 - b = 4

3b-2b=8

b=8 cm =>B=12 cm