giải
đổi 3,07 dm= 30,7cm
chu vi hình thang là
25,3+30,7+12,8+11,5=80,3(cm)
đáp số80,3cm
dễ đúng không ?bạn không nhớ à?chu vi là phần bao bọc bên ngoài ấy
uk,ăn jjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj đây
minh thay cac ban tra loi dung day !
80.3 dug rui do co giao mk cham diem ma ahjhjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj