Các câu hỏi tương tự
cho 1 hinh thang ABCD co tong hai day AB va BC la 24 cm. neu mo rong lay nho them 5 cm thi dien tich hanh thang se tang them 30 cm2 . tinh dien tich hinh thang da cho ( ve hinh ro giai)
cho hinh thang ABCD cos tong hai day AB va CD la 42 cm. Neu mo rong day be them 5 cm thi dien tich hinh thang se tang them 30 cm2 . Tinh
a , Dien tich hinh thang da cho
b, Day AB va CD biet rang day AB dai hon day DC la 8 cm
cho hinh thang abcd co tong do dai 2 day ab va cd la 42 m neu mo rong day be them 5 m thi dien tich hinh thang se tang them la 30m2 tinh dien tich hinh thang da cho
Cho hinh thang abcd co tong hai day ab va cd la 42 cm. Neu mo rong day be them 5 cm thi dien tich tang them 30 cm. Tinh :
Dien tich hinh thang ban dau
Tim day ab , biet day cd dai hon day ab la 12 cm.
cho hinh tam giac abcd co day nho ab la 27cm , day lon cd la 48 cm neu keo dai day nho ve phia b them 5 cm thi dien tich cua hinh tang len 40 cm2.Tinh dien tich hinh thang da cho
Mot hinh thang co day be la 19 cm va bang 1/2 day lon. Neu mo rong day lon them 4,5 cm thi dien tich tang them 27 cm2. Tinh dien tich hinh thang ban dau.
Mot hinh thang co day lon 24 cm , day nho bang 2 / 3 day lon . Neu keo dai day lon them 5 cm thi dien tich hinh thang tang len 30 cm vuong . Tnh dien tich hinh thang ban dau
mot hinh thang co dien tich la 191,76 cm2. neu mo rong day be 4 cm thi dien tich tang them 20,4 cm2. tinh moi day hinh thang biet day be kem day lon 9,6cm.
( ^-^ ) : cho luon bai giai ra nha !!!
mot hinh thang co day be bang 3/5 day lon va co chieu cao bang 23cm.Nguoi ta mo rong hinh thang bang cach keo dai day be cho bang day lon da duoc1 hinh chu nhat ,sau khi mo rong thi dien tich tang them 207cm vuong .Tinh dien tich hinh thang luc chua mo rong?