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Sagot :

Bonsoir,

on cherche EB

EB² = EA² + BA²

3²+ 4² = 9+16 = 25

EB =√25

EB = 5

périmètre:

3+4+5+5+5 = >23hm

=> 23 hm de clôture (2 300m)

aire:

carré + triangle

(5*5) + (3*4)/2

25 + 6 = > 31hm²  (310 000m² )

coût:

27,50 * 2 300 => 63 250€

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