Các câu hỏi tương tự
mot hinh chu nhat co chieu dai gap ruoi chieu rong Neu chieu rong tang them 2m , chieu dai tang them 2m thi luc do dien tich tang them 64m2 . Tim dien tich cua hinh chu nhat luc 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
neu tang chieu dai hinh chu nhat them 20% do dai cua no ohai giam chieu rong di bao nhieu % do dai mcua no de dien tich hinh chu nhat do tang them 8%
Neu tang chieu dai cua mot hinh chu nhat them 25% va chieu rong cua no tang them 20% thi duoc mot hinh chu nhat moi co dien tich lon hon dien tich hinh chu nhat ban dau la \(10m^2\) Tinh dien tich hinh chu nhat ban dau
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
1 hinh chu nhat co chieu dai gap ruoi chieu rong .neu moi chieu tang them 1 m thi duoc hinh chu nhat moi co dien tich tang them 31 m2.tinh dien tich cua hinh chu nhat ban dau
Mot hinh chu nhat co chieu dai gap ruoi chieu rong . Neu moi chieu tang them 1m thi duoc hinh chu nhat moi co dien tich tang them 31m vuong . Tinh dien tich cua hinh chu nhat ban dau ?
Neu tang 20% chieu rong cua1 hinh chu nhat va giu nguyen chieu dai thi dien tich hinh chu nhat tang them 45cm vuong tim dien tich ban dau cua 1 hinh chu nhat
chu vi cua hcn la 72cm neu giam chieu dai di 1/5 do dai cua no va tang chieu rong len 1/4 do dai cua no thi duoc hcn moi bang chu vi hcn ban dau . tinh dien tich hinh chu nhat