Bai 7:Co hai soi day,soi thu nhat dai hon soi thu hai 54m.Neu cat di 1200cm o moi soi thi phan con lai cua soi thu nhat gap 4 phan con lai cua soi day thu hai.Hoi moi soi day dai bao nhieu m?
moi nguoi ghi ro loi giai ra nhe hihi cam on moi nguoi nhieu
do dai cua soi day thu nhat va soi day thu 2 la 12,2
do dai cua soi day thu hai va soi day thu 3 la 104
do dai soi day thu nhat va soi day thu 3 la1,74
tinh do dai soi day thu8 nhat voi don vi la m
tong chieu dai cua hai soi day la 1m. Soi day thu nhat daâi bang 3/7 soi day thu hai. Vay chieu di soi day thu hai la bao nhieu
mot hinh chu nhat co chieu rong bang 36 cm chieu rong bang 3/5 chieu dai duoc uon tu mot soi day thep .hoi soi day thep do dai bao nhieu met
giai giup minh luon nhe minh hua ticj that nhieu nhieu nhieu luon
soi day thu nhat dai 1,5m , soi day thu hai dai hon soi thu nhat 0,07m . Soi thu ba dai hon soi thu hai 1,03m .Hoi ca ba soi day dai tong cong bao nhieu met ?
Mot hinh chu nhat co chieu dai bang 36cm chieu rong bang 3/5 chieu dai duoc uon tu mot soi day thep hoi soi day thep do dai bao nhieu met
1 soi day uon thanh 1 hinh vuong canh 8 dm 1 cm.Hoi cung soi day do uon thanh 1 hinh tam giac co 3 canh bang nhau thi moi canh dai ? dm
mot soi day noi hai banh xe rong roc [soi day noi qua ]. Duong kinh cua banh xe co do dai 0,35 m .hai truc cach nhau 3,1m . tinh do dai soi day
tong do dai cua soi day thu nhat va soi day thu hai la 12.2m
tong do dai cua soi day thu hai va soi day thu ba la 104 dm
tong do dai cua soi day thu nhat va soi day thu ba la 1,74 dam
hoi soi day dai nhat dai ...... m