mot hinh tam giac co dien tich 599 cm2 canh day bang 43cm . Neu tang canh day them 8cm thi dien tich tang them bao nhieu
Cho tam giac ABC co dien tich bang 599 cm2. Canh day BC co do dai la 43cm. Hoi neu keo dai canh BC them 7cm thi duoc tam giac moi co dien tich hon dien tich tam giac ABC la bao nhieu? ( PHAI VE HINH)
va23m 18m =23m + 18/ m bang may vay
Mot manh dat hinh thang co day be bang 180 m , day lon bang 14 phan 9 day be, chieu cao bang 4 phan 7 day lon . Hoi dien tich manh dat bang bao nhieu met vuong , bao nhieu hec ta
gia ban 1 m vai la 12000d.Nguoi ban hang ban 1 m vai duoc lai 24000d.Hoi so tien lai bang bao nhieu phan tram gia ban ? bang bao nhieu phan tram gia von ?
1 khu dat hinh chu nhat co chieu dai la 200 m,chieu rong bang 3/4 chieu dai .hoi dien tich khu dat do bang bao nhieu met vuong ,bang bao nhieu hec -ta?
1,4 gio bang bao nhieu phut
2,8 gio bang giay
2 phan 3gio bang bao nhieu phut
84 phut bang bao nhieu gio
210 phut bang bao nhieu gio
90 giay bang bao nhieu phut
45 giay bang bao nhieu phut
Hay giai thich vi sao lam nhu the
a] 3kg 240g bang bao nhieu kg b] 4kg 7g bang bao nhieu kg c] 32, 41 kg bang bao nhieu hg d] 0, 75 kg bang bao nhieu dag
mot khu vuon hinh chu nhat co chu vi la 0,8km chieu dai hon chieu rong 100m hoi dien tich khu vuon bang bao nhieu m vuong va bang bao nhieu hec ta