Các câu hỏi tương tự
mot manh vuon hinh thang co day be 36m,day lon 52m.neu tang them 4m thi dien tich tang them 60m2.tinh dien tich hinh thang ban dau?
mot hinh thang co day be 12cm day lon 18 cm khi keo chieu day lon 3cm thi dien tich tang 12cm2 tinh dien tich
mot thua ruong hinh chu nhat co chu vi 100 m nguoi ta tang chieu dai len 1/3 chieu dai thi chu vi hinh moi la 120 m tinh dien tich thua ruong ban dau
Mot thua ruong hinh binh hanh co do dai day hon chieu cao la 348 m. Tinh dien tich hinh binh hanh biet chieu cao bang 2/5 do dai day
mot thua ruong hinh chu nhat co chu vi la 100m.Nguoi ta tang chieu dai len 1/3 chieu dai thi chu vi hinh chu nhat moi la 120m.Tinh dien tich thua ruong ban dau
Co mot mieng dat hinh binh hanh canh day bang 32m.Nguoi ta mo rong mieng dat bang cach tang canh day them 4mduoc mieng dat moi hon dien tich mieng dat ban dau la 56m2.Hoi dien tich ban dau la bao nhieu
neu tang chieu dai cua mot hinh chu nhat len 25 %va chieu rong len 20 % thi duoc mot hinh chu nhat moi lon hon dien tich hinh chu nhat ban dau la 10 m2 tinh dien tich hinh chu nhat vban dau
cac ban oi hay giup minh nhe
mot thua dat hinh chu nhat co chu vi la 106m.neu giam chieu dai 5m,tang chieu rong 5m thi dien tich cua hinh khong thay doi .tinh dien tich thua ruong do
mot thua ruong hinh chu nhat co chieu dai gap 3 lan chieu rong. sau khi bot chieu dai di 4m va them vao chieu rong 4m thi dien tich thua ruong tang them 112m2. tinh dien tich thua ruong ban dau?