Sagot :
Bonjour,
Périmètre = 2 × AB + AD + 3 × FE + (GB - GC)
= 2 × 7/5 + 2/3 + 3 × 7/3 + (7/3 - 2/3)
= 14/5 + 2/3 + 21/3 + 5/3
= 14/5 + 28/3
= 42/15 + 140/15
= 182/15
2) Aire = AD × AB + FE²
= 2/3 × 7/5 + (7/3)²
= 14/15 + 49/9
= 42/45 + 245/45
= 287/45
Bonsoir,
périmètre:
2/3+7/5+7/3+7/3+7/3+7/5=
23/3 + 14/5 =
115/15+ 42/15 =
157/15
aire:
(2/3* 7/5) + (7/3 *7/3)
= 14/15 + 49/9
= 42/45 + 245/45
= 287/45