mot thua ruong hcn co chu vi bang 700m , chieu rong bang 4/5 chieu dai . hoi dien tich thua ruong la bao nhieu
mot thua ruong cay lua hcn co nua chu vi la 32m, chieu dai hon cheu ron 6m .tinh dien tich cua thua ruong do?
1 thua rong hcn co chu vi la 110m.Neu tang chieu rong 5m va giam chieu dai 5m thi dien tich thua ruong ko thay doi.Tinh dien tich thua ruong
mot thua ruong hcn co tong do dai hai cach lien tiep bang 96 m chieu dai hon chieu rong bang 2dam tinh dien tich thua ruong hcn do ?
1 thua ruong hinh vuong co chu vi bang chu vi cua 1 thua ruong hinh chu nhat co chieu dai la 238m va chieu rong la 182m .tinh dien tich thua ruong hinh vuong do
mot thua ruong hinh chu nhat co nua chu vi la 235m . Chieu rong bang 2 phan 3 chieu dai .tinh dien tich cua thua ruong do
Mot thua ruong hinh chu nhat co nua chu vi la 120 m . Chieu rong bang 2/3 chieu dai . tinh dien tich thua ruong do
1 thua ruong hcn co chu vi 100m.Nguoi ta giam chieu dai di 1/3 chieu dai thi chu vi hcn moi la 80m.Tinh dien tich thua ruong ban dau
mot thua ruong hinh chu nhat co chu vi la 360 m chieu rong bang 2/3 chieu dai tinh dien tich thua ruong