manh dat hinh chu nhat ve tren ban do ti le 1:500 co chieu dai la 5 cm va chieu rong la 2cm . tinh chieu dai , chieu rong that cua manh dat do
mot nen phong hoc hinh chu nhat co chieu dai 12m ,chieu dong 9m .nguoi ta muon lat nen phong hoc do thi can it nhat bao nhieu vien gach men hinh vuong c0 canh 3 dm .biet dien tich phan mach vua la khong dang ke .
san khau truong em hinh chu nhat co chieu dai 10m chieu rong 6m ban an ve san khau do tren ban do dai moi canh san khau la may xang ti met
Mot manh dat hinh chu nhat co chieu dai 15m,chieu rong 10m duoc ve tren ban do ti le 1:500.hoi tren ban do do,do dai cua moi canh hinh chu nhat la may cm?
Lam day du mik tick nhe
Mot manh dat hinh chu nhat co chieu dai 30m chieu rong 15m duoc ve tren ban do co ti le 1;500. Tinh den tich theo ti le tren ban do la cm
Ban do san van dong hinh chu nhat ve theo ti le 1:800. Tren ban do chieu dai san la 25cm, chieu rong san la 20cm. Tinh dien tich that cua san van dong do
san truong em hinh chu nhat co chieu dai 120m, chieu rong 80m hay ve hinh chu nhat bieu thi chieu daiva chieu rong cua san truong tren ban do ti le 1/2500
tren ban do ti le 1:1000 co hinh ve mot cai ho hinh chu nhat co chieu dai 12 cm chieu rong 9 cm . tren thuc te dien tich ho do la bao nhieu
De lat nen 1 phong hoc hinh chu nhat co chieu dai 15 m,chieu rong 6 m nguoi ta dung loai gach men hinh vuong canh 30 cm.Gia 1 vien gach la 2500 dong.Hoi can bao nhieu tien de lat kin phong hoc do?{khong tinh phan mach vua}