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Mori Ran
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kinamoto yukiko
24 tháng 2 2018 lúc 14:58

Chiều cao tam giác ABC là:

     40*2:5=16(cm)

Độ dài đoạn BC là:

     120*2:16=15(cm)

                  Đáp số:15cm

Kami nomi zo Shiru
24 tháng 2 2019 lúc 15:42

Chiều cao của tam giác ABC là :

          24 : 2 : 5 = 2,4 ( cm )

Độ dài đoạn BC là :

          120 : 2 : 2,4 = 25 ( cm )

                              Đáp số : 25 cm.

Nguyễn Tiến Đạt
24 tháng 5 2020 lúc 17:31

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Tô Như Linh
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dang vu hai lam
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xin vé báo cáo
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xin vé báo cáo
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Đồng Quangg Anhh
27 tháng 2 2022 lúc 21:36

Đường cao tam giác ABC là:

\(7,5\text{×}2:3=5\left(cm\right)\)

Diện tích tam giác ABC là:

\(14\text{×}5:2=35\left(cm^2\right)\)

\(\text{Đ}S:35cm^2\)

xin vé báo cáo
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dang anh thi
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Nguyen Van Tuan
12 tháng 2 2016 lúc 14:49

bạn đăng từng bài thôi nghe bạn

Lonely Member
12 tháng 2 2016 lúc 14:50

nhieu qua, sao tra loi het duoc

Doan Quynh
12 tháng 2 2016 lúc 14:52

sao nhiều z nhìn lóa mắt luôn rồi 

Vương Linh Anh
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nguyễn thị giáng tiên
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