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Sagot :

VINS

bonsoir

AB  =  600 m

BC² =  600² + 450² = 562 500

BC = √562 500 = 750  m

AC/AD = AB/AE =  CB / DE

450/AD =  600/ 1 800

600 AD =  810 000

AD = 1 350

450/1 350 =  750/ DE

450 DE = 1 012 500

DE = 2 250

ABCDE =  600 + 750 +  900 + 2 250 =  4 500 m

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