Question

Daca din perimetrul unui romb scadem trei optimi,din rest doua patrimi, iar din noul rest o doime , obtinem 675cm . Afla peeimetrul rombului.

Answer 1

675cm*2=1350cm
1350cm*2=2700cm
2700cm/5=540cm
540cm*8=4320cm

R=4320cm

Answer 2

4a=perimetrul

4a-3*4a/8=4a-3a/2 = 8a-3a / 2 = 5a/2

2/4=1/2

5a/2-5a / 2*2 = 5a/2 -5a/4 = 10a-5a / 4 = 5a/4

5a/4 -5a / 4*2 = 10a-5a / 8 = 5a/8

5a/8=675 l:5

a=8*135 cm

P=4a = 4*8*135 = 32*135 = 4320 cm = 43,20 m.