Các câu hỏi tương tự
cho hinh thang abcd co S= 15 dm vuong. keo dai ab 1doan be=ab; keo dai ab 1 doan cg=bc; keo dai cd 1 doan dh=cd va keo dai ad 1 doan ak=ad. tinh S hinh tu giac eghk
hinh tam abc co dien tich 360 cm2 neu keo dai bc them mot doan cd = 8cm thi dien tich hinh tam giac abc la 420cm2 . tinh do dai bc
Hinh thang ABCD co day AB=9cm va day CD=12cm.Neu keo dai day be them mot doan BE=4cm va keo day lon them CG=5cm thi S hinh thang tang 13.5cm2.Tinh SABCD
Cho hinh tam giac ABCD co dien tich = 136,8 cm2.Keo dai canh BC mot doan CD sao cho BC = CD x3 . Vay dien tich hinh tam giac ABCD la................cm2
Cho tam giac ABC co dien tich la 120 cm 2 . Keo dai canh day BC them mot doan CD = 5 cm . Noi AD biet dien tich ABD = 150 cm 2. Tinh do dai canh day BC
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 la 336m2 va co day bc la 28m nay nguoi ta mo rong them bang cach keo dai day bc ve phia c mot doan cd nen dien tich tang them 84m2 tinh doan cd?
CHO tam ABC co dien tich 136.8cm2 keo dai canh BC mot doan CD sao cho BC=CD*3 vay dien tich tam giac ABD la bao nhieu cm2 ?
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?