\(30\%-1\dfrac{1}{5}+\dfrac{1}{5}\cdot\dfrac{-1}{2}\)
\(=\dfrac{3}{10}-\dfrac{6}{5}-\dfrac{1}{10}\)
\(=\dfrac{2}{10}-\dfrac{6}{5}=\dfrac{1}{5}-\dfrac{6}{5}=-1\)
\(30\%-1\dfrac{1}{5}+\dfrac{1}{5}\cdot\dfrac{-1}{2}\)
\(=\dfrac{3}{10}-\dfrac{6}{5}-\dfrac{1}{10}\)
\(=\dfrac{2}{10}-\dfrac{6}{5}=\dfrac{1}{5}-\dfrac{6}{5}=-1\)
Tinh dien xung quanh va dien tich toan phan cua hinh hop chu nhat co chieu 3/5,chieu rong 1/4 m va chieu cao 1/3m.
tinh dien tich xung quanh va hinh hop chu nhat co chieu dai 1/2 dm chieu rong 3/4 dm chieu cao 5/6 dm.
1 be nuoc hinh hop chu nhat khong co nap . Ben trong co chieu dai 2,7m , chieu rong 1,5m va chieu cao la 1,4m . Tinh s toan phan va the tich cua be nuoc do
Tim so tu nhien nho nhat chia cho ca 2 , 3 , 4 , 5 va 6 deu du 1
tinh the tich cua 1 hinh hop chu nhat co chieu dai la 5 dm , biet rang neu giam chieu dai di 2dm giu nguyen chieu rong va chieu cao thi the tich hinh hop chu nhat do giam di 12dm3
10 hop sua va 9 hop bo gia 19500đ tinh gia tien moi hop biet 5 hop sua dat bang 2 hop bo
tinh gia tri bieu thuc
[6 : 3/5 - 1 va 1/6 x 6/7] : [4 va 1/5 x 10/11 + 5 va 2/11]
1, 1 hinh lap phuong co chu vi day la 20,4m . Tinh dien tich xung quanh , dien tich toan phan va the tich cua hinh lap phuong do ?
2, nguoi ta lam 1 cai hop dang hinh hop chu nhat kg nap bang bia co chu vi day la 123m , rong = \(\frac{2}{3}\)dai , cao bang 15m .
Tinh dien tich bia can lam hop biet phan mep dan kg dang ke .
3 , 1 hinh lap phuong co dien tich xung quanh la 196m . Tinh dien tich toan phan va the tich cua hinh do
4, 1can phong hinh hop chu nhat co dai = 10m , rong = \(\frac{3}{5}\)dai , cao = \(\frac{2}{3}\)rong . Nguoi do lan son phia trong tuong va trn nha . Tiònh dien tich can lan , biet dien tich cua ra vao va cua so la 12,8m
Gai Han Ra Nhe Cac Ban !
tinh dien tich xung quanh va dien tich toan phan cua hinh hop chu nhat co:
a, chieu dai 1,5 m chieu rong 0,5 m va chieu cao 1,1 m?
b, chieu dai 4/5 dm chieu rong 1/3 dm va chieu cao 3/4 dm ?
1. Nguoi ta son cac mat trong cua hinh hop chu nhat co chieu dai 6m chieu rong 4m1,2 va ca 4m. Biet rang phong co 5 cua so rong 1,2m va cao 0,8m, 1 cua ra vao cao 2,2m va rong 1,2 .Tinh tien phai tra cho tho son nuoc biet 1m vuong phai tra 300 000 dong son luon ca tran nha.
2.Mot cai be hinh hop chu nhat co chieu dai 2,4m rong 1,2m va cao 2m.Trong be co 1/3 do chua nuoc. Hoi can phai bom vao be bao nhieu nuoc de day be do ?
Giai nhanh gium minh nha !
ca hai hop co the tich bang 405 cm3 biet 1/5 the tich cua hop thu hai bang hai 2/9 the tich hop thu nhat tinh the tich cua moi hop