Bonsoir,
1° : 2/7
2°: 2/3
3° :
1-2/7 - 2/3=
21/21 - 6/21 - 14/21 = 1/21
Aire du terrain:
630* 490 =>308 700m²
1/21 =>
308 700/21 =>14 700m²
6/21 =>
14 700 * 6 =>88 200m²
14/21 =>
14 700* 14 =>205 800
