Các câu hỏi tương tự
mot thua ruong hinh chu nhat co chieu rong bang 3/5 chieu dai neu chieu dai bot di 1/5 cua no thi va chieu rong tang them 1/3cua no ta dduoc mot thua ruong hinh vuong co dien tich lon hon dien tich hinh chu nhat ban dau la 36m2 tinh chu vi va dien tich thua ruong ban dau
mot hinh chu nhat co chieu rong bang 3/5 chieu dai neu chieu dai bot di 1/5 cua no va chieu rong tang them 1/3 cua no ta duoc thua ruong hinh vuong co dien tich lon hon dien tich hinh chu nhat ban dau la 36m2 tinh chu vi va dien tich thua ruong ban dau
Mot thua ruong hinh chu nhat. Neu bot chieu dai 3m thi dien tich giam di 102m vuong. Tinh chu vi va dien tich thua ruong do. Biet chieu dai gap ruoi chieu rong
mot thua ruong hinh thang co dien tich 4200m2 va co day lon gap 3 lan day be . neu giam day be 15 m thi dien tich thua ruong se bi giam 450m2 . tinh do dai moi day cua thua ruong hinh thang tren
Mot thua ruong hinh thang co dien tich 4200 m2 , day lon gap 3 lan day be . Tinh do dai moi day , biet rang neu day be giam di 15 m thi dien tich thua ruong se giam di 450 m2.
mot thua dat hinh vuong neu tang so do canh them 3m thi dien tich se tang them 99mvuong hay tinh dien tich thua ruong ban dau khi chua tang do dai canh
mot thua ruong hinh thang co day lon hon day be 8m co chieu cao la 32m nay nguoi ta dap mot con duong chay qua thua ruong phan con lai la hinh thang vuong co dien tich kem dien tich ban dau la 96m2 de phan con lai tro thanh mot thua ruong hinh chu nhat ma dien tich bang dien tich ban dau thi ta phai thay doi hai day cua hinh thang nhu the nao
Mot manh dat hinh tam giac co canh day la 40m nguoi ta mo rong canh day them 5m thi dien tich cua tam giac do tang 30cm2 tinh dien tich thua ruong ban dau
Mot thua ruong hinh thang co do dai day lon la 21m va lon hon canh day be la 8,2m. Neu mo rong day lon them 7m thi dien tich tang them la 56 met vuong. Tinh dien tich thua ruong