Mot ho nuoc hinh hop chu nhat co chieu dai gap 3 lan chieu rong, chu vi day bang 9,6m, chieu cao la 1,8m. Nguoi ta chua nuoc bang 2/3 ho. Hoi trong ho co bao nhieu lit nuoc?
giai
Nua chu vi day ho: 9,6:2=4,8(m)
Tong so phan bang nhau:
3+1=4(phan)
Gia tri mot phan:
4,8:4=1,2(m)
chieu dai la: 1,2*3=3,6(m)
chieu rong la:1,2*1=1,2(m)
The tich ho la: 3,6*1,2*1,8=7,776(m3)=7776dm3=7776lit
so lit nuoc dang chua trong ho la: 7776:3*2=5184(l)
Ds:5184 l