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Sagot :

LYA08

Réponse:

Bsr,

1. rectangle :

Formule: 2×( a+b )

P= 2×( 6+2 )

P= 2×8

P= 16

triangle CED:

P= 2+2+2

P= 6

ADECB:

P= (3×2) + (2×6)

P= 6 + 12

P= 18

rectangle FHG:

P= (2+4) × 3

P= 6×3

P= 18

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