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cungdodaihoc2k
2 năm trước
Một hình chữ Nhật có chu vi là 172 phần 3 cm , chiều dài hơn chiều rộng 18 phần 3 cm .hỏi diện tích hình chữ Nhật là bao nhiêu? ( kết quả dưới dạng phân số tối giản) Bài 2: một hình chữ Nhật có chiều dài 1phần 5 m , chiều rộng là 1phần 20 m .chu vi hình chữ Nhật là bao nhiêu? Bài 3: cho hình bình hành abcd có am =16cm, an =28cm,diện tích hình bình hành abcd là 1344cm vuông.tính chu vi hình bình hành
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