Bonjour,
périmètre:
2( 4/3+ 5/7)
= 2( 28/21 + 15/21 )
= 2* 43/21
= 86/21 dm
aire:
4/3 * 5/7
= 20/21 dm²
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Bonjour,
périmètre:
2( 4/3+ 5/7)
= 2( 28/21 + 15/21 )
= 2* 43/21
= 86/21 dm
aire:
4/3 * 5/7
= 20/21 dm²