Mathematics
Junior High
頭のいい方、詳しく教えて下さい。
有の図において,
AD : DB=BE : EC=2 : 3
のとき, 次の面積比え求めなさい。
(1) へOAB : へOAC (2) ^OBC : へOAC
(《)) 人WWsiea 人ぐく⑥ぐAV@
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