Question

ajutor plsssssss maine am test ​

Answer 1

Răspuns:

a) 5 cm

b) 7 cm

c) 10 cm

Explicație pas cu pas:

AD congruent(egal) cu BC ->NOTEZ AD SI BC = X

=> a) P= 20 cm

P= AB+CD+AD+BC= 4+6+ x + x = 10+ 2x

20= 10+2x

2x=10=> x = 5 cm => AD= 5cm

b) P=24 cm

* urmam pasii de la primul subpunct*

24= 4+6+ 2x

24=10+ 2x

x= 7 cm => AD=7cm

c) P=30 cm

30= 4+6 + 2x

2x=20

x=10 cm => AD= 10 cm