Question

Am nevoie urgent va rog !​

Answer 1

Răspuns:

Explicație pas cu pas:

a)

AF=18m

AB=16 m

BC=DE=14 m

AC=16+14=30 m

P=2*(DE+DC )

108=2DE+2DC

108=2*14+2DC

108=28+2DC

2DC= 108-28

2C=80

DC=80:2

DC=40 m

DC=BE=40m

ABEF- trapez dreptunghic

Aria= [(AF +BE)*AB]/2

Aria =[ (18+40)*16]/2

ARIA= 58*16/2

Aria =464m²

b)

A BCDE= DC*ED

A BCDE= 40*14

A bcde=560m²

-

A bcde+A abef = 464+560 = 1024 m²

1024x4,5=4.608 kg carofi

4.608x10,30 =47.462, 4 lei