mot thung chua hang co dang hinh hop chu nhat chieu dai 320cm chieu rong 192cm chieu cao 224cm nguoi ta muon xep cac hop co dang hinh lap phuong vao trong thung chua hang sao cho cac hop xep khit nhau theo ca chieu dai va chieu rong va chieu cao cua thung canh cac hpop hinh lap phuong do co do dai lon nhat la bao nhieu?(sodo cac canh cua h inh lap phuong la 1so tu nhien voi don vi lacm
giup minh voi mai co tiet hoc roi
Mot thung chua hang co dang hinh hop chu nhat chieu dai 234cm , chieu rong 216cm , chieu cao 144cm . Nguoi ta muon xep cac hop nho dang hinh lap phuong vao trong thung chua hang do sao cho cac hop xep khit theo ca chieu dai, chieu rong , chieu cao cua thung . Canh cac hinh lap phuong co do dai lon nhat la bao nhieu ? ( so do cac canh hinh lap phuong la mot so tu nhien voi don vi la cm)
1 hinh hop chu nhat co chieu dai la 7 cm chieu rong 5cm chieu cao la 6 cm.1 hinh lap phuong co the tich hon the tich cua hinh hop chu nhat do la 6 cm3 .tinh dien tich xung quanh dien tich toan phan cua hinh lap phuong do
hoi phai dung bao nhieu hinh lap phuong nho canh 1cm de xep thanh hinh hop chu nhat co chieu dai 1,6dm,rong 1,4dm,cao 9cm
nguoi ta quet son mat ngoai cua 1 cai thung sat dang hinh hop chu nhat co chieu dai 3,8m ,chieu rong 2,5m va chieu cao 0,8m .tinh dien tich phan quet son cua cai thung
hoi phai dung tat ca bao nhieu khoi lap phuong nho co 1cm de xep thanh mot khoi hinh hop chu nhat dai 1,6 dm chieu rong 1,4 cm
khi nghien cuu kien truc cua den PAC TE NONG nguoi ta nhan xet kich thuoc cua cac hinh hinh hoc trong den phan lon chiu anh huong cua TI SO VANG
a) cac kich thuoc cua mot hinh chu nhat tuan theo TI SO VANG,biet rang chieu rong cua do duoc 3,09m tinh chieu dai hinh chu nhat do
b) chieu dai cua mot hinh chu nhat la 4,5m de co TI SO VANG thi chieu rong cua no phai la bao nhieu
c) mot khu vuon hinh chu nhatco chieu dai la 15,4m chieu rong la 8m khu vuon nay co dat TI SO VANG KO
mot be boi dang hinh hop chu nhat co chieu dai 22.45 m chieu rong 149.2 m neu be chua 414.72m khoithi muc nuoc troing be len toi 4/5 chieu cao cua be hoi chieu cao cua be la bao nhieu met
Mot vuon hinh chu nhat co chieu dai 105m,chieu rong 60m.Nguoi ta muon trong cay xung quanh vuon sao cho moi goc vuon co mot cay va khoang cach giua 2 cay lien tiep bang nhau.Tinh khoang cach lon nhat giua 2 cay lien tiep (khoang cach giua 2 cay la 1 so tu nhien voi don vi la met).Khi do tong so cay la bao nhieu?
cac ban giup minh nhe
bai 2 ;tinh chu vi va dien tich cac hinh sau;a hinh chu nhat co chieu dai 12cmva chieu rong 8cm b;hinh vuong co chieu dai 6cm c; hinh thang can co do dai 2 day la 4cm va 10cm chieu cao4 cm canh ben 5cm
