Các câu hỏi tương tự
cho hinh tam giac abc , canh bc co do dai 9cm.Keo dai canh bc ve phia b tren do lay diem d sao cho bd co do dai 6cm .Tinh dien tich hinh tam giac abc ,biet dien tich hinh tam giac abd la 18cm vuong.
Cho hinh tam giac ABC co day BC dai 2cm.Nguoi ta keo dai day BC ve phia C them mot doan CD thi dien tich tam giac ABD= 3/2 dien tich tam giac ABC. Tinh do dai CD
cho tam giac ABC co dien tich la15cm2. keo dai AB ve phia A 1 doan bang AB, ta co BAM. keo dai AC ve phia C 1 doan CN bang AC. keo dai CB ve phia B doan BQ bang CB. tinh dien tich tam giac MNQ
cho hinh tam giac bc = 28m neu keo dai day bc ve phia c them mot doan cd = 7m thi dien tich tang them 84m2 tinh dien tich hinh tam giac abc?
Cho tam giac ABC . Keo dai canh day BC ve phia C mot d9an thang dai 5, 2 cm thi dien tich tang them 65cm vuong . Biet d8en tich tam giac ABC luc dau la 187, 5m vuong . Tinh canh day BC luc dau
cho tam giac abc co canh bc= 20cm keo dai bc ve phia c them mot doan cd=5cm thi dien tich tam giac abd hon dien tich abc la 30cm tim dien tich tam giac abc
cho tam giac abc co dien tich bang 72 cm vuong canh day bc bang 6cm neu keo dai canh day ve phia c mot doan 3cm thi dien tich cua hinh tam giac sau khi mo rong la bao nhieu ?
giup mk nhe
cho tam giac abc co dien tich 150cm2 neu keo dai ab ve phia b 1 doan 7cm thi dien tich hinh tam giac tang them 2cm tinh canh day ab
Cho hinh tam giac ABC canh BC=24cm.Neu keo dai doan bc them 5 cm thi dien tich tam giac tang them 20cm vuong. tinh dien tich hinhf tam giac ABC.[Ve hinh minh hoa]