Các câu hỏi tương tự
hay tinh chieu cao cua hinh thang co day lon la 6 day be la 4 dien tich 100
Cho hinh thang co duong cao 10 cm . Hieu hai day la 22 cm . Keo dai day nho bang day lon de thanh hinh chu nhat co chieu dai bang day lon, chieu rong bang chieu cao hinh thang . Dien tich duoc mo rong them bang 1/7 dien tich hinh thang cu.Phan mo rong ve phia ben phai co dien tich 90cm vuong .Hay tinh day lon cua hinh thang ban dau
hai be hinh chu nhat co chieu cao 1 m day be 1la hinh chu nhat co chieu dai bang hai chieu rong . day be hai cung la hinh chu nhat co chu vi lon hon day be mot la 36 dm va 2 day be co chieu rong bang nhau .tinh the tich cua moi be biet the tich be hai lon hon be mot la 5,76 met khoi
mot manh dat hinh thang co dien tich 1610 m2 . chieu cao 20 m ,day lon hon day be 14m . tinh day lon va day be
mot khu dat trong bap hinh thang vuong co dien tich 1875 m2, chieu cao la 30 m, day lon hon day be 21 m. nguoi ta cat khu dat theo chieu cao thanh hai mieng, mot mieng hinh chu nhat va mot mieng hinh tam giac vuong. tinh so kg bap thu duoc tren mieng dat hinh chu nhat, biet nang suat bap o do lả 3,1tan/ha.
cho hinh thanh ABCD co day AB la 15 cm , day CDla 20 cm , chieu cao la 14 cm va AB cat BD tai E
a. tinhdien tich hinh thang ABCD
b. tinh dien tich hinh tam giac CED
c. so sanh hai tam giaC AED VA BEC
mot thua ruong hinh thang co day lon 40cm , day be bang 3/5 day lon . Biet dien tich hinh thang bang
khong phay hai tram bay hai met vuong. tinh duong cao cua hinh thang lon.
dien tich hinh tam giac bang 2/3 dien tich hinh vuong biet chi vi hinh vuong la 240m . chieu cao la 120 cm . tinh do dai day cua hinh tam giac
cho hinh thang abcd co day nho ab day lon cd. goi m la diem chinh giua doan cd. dien tich hinh thang abcd gap dien tich tam giac amd may lan