Răspuns :
Răspuns:
A ABFE=(B+b)×h/2
A parchet=(AB+EF)×AE/2
A parchet=(12+4)×16/2
A parchet= 16×16/2
A parchet= 256/2
A parchet= 128 m²
Răspuns:
ABFE- trapez dreptunghic
AD=18 cm | => AE=18-2=16 cm= h
DE=2 cm |
A abfe= (B+b). h /2= (AB+EF) . AE /2
A abfe = (12+4) . 16 /2 (simplificam 16 cu 2) = 16 . 8
=> Aabfe= 128 cm partati