Các câu hỏi tương tự
cho tam giac ABC co canh AB =50cm.neu keo dai canh BC them mot doan CD =30cm thi ta co tam giac ABD la tam giac can voiAB=AD va tam giac ACD co chieu cao ke tu C bang 18 cm.tim dien tinh tam giac ABC biet chu vi tam giac ABD bang 180cm
Cho tam giac ABC co canh BC bang 20cm. Neu keo dai BC mot doan CE bang 6cm, do do dien tich tam giac ABE lon hon dien tich tam giac ABC la 48cm2. Tinh chieu cao cua tam giac ABC
tam giac abc co 50 cm neu keo dai bc them mot doan c=30cm thi tam giac abc la tam giac can voi ab va ad va tam giac acd co chieu cao ho tu c=18 cm.dien tich tam giac abc biet dien tich tam giac abc la 180 m
cho tam giac ABC co so do canh BC bang 32 cm neu keo dai doan BC them 4 cm thi dien tich tam giac se tang them 54cm2,Hoi tam giac abc co dien tich bang bao nhieu cm2.
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 day bc bang 5,29 cm chieu cao ah bang 3 cm tinh dien tich tam giac abc
keo dai day bc mot doan cd bang 2,3 cm dien tich tang them chiem bao nhieu phan tram dien tich tam giac abc
a)Mot hinh tam giac ABC co day BC la 34,5dm. Neu keo dai canh BC ve phia C mot doan bai 7 dm thi dien tich tang them 42 dm2 .Tinh dien tich hinh tam giac ABC.
b)Mot hinh thang co tong hai day la 78dm,day lon bang 7/6 day nho .Chieu cao bang 1/2 day lon .Tinh dien ich hinh thang do
cho tam giac ABC co canh AB dai 62 cm , chieu cao tuong ung voi canh AB va bang 24cm. tren 3 canh AB , AC , BC lay cac diem M, N, P la trung diem cua cac canh do , Tinh dien tich tam giac MNP
tam giac abc co do dai canh day bang 36 cm ,chieu cao bang 75%do dai day .tinh dien tich cua tam giac abc