Mot hinh thang co chieu cao la 12 va dien tich la 48cm2.tinh chieu dai va chieu rong .biet chieu dai gap doi chieu rong
giup minh giai bai toan nay nha.nhola giai thich ro rang day
giai bai toan sau:mot can chua 7.5l dau thi can duoc 7kg.hoi sau khi dung 5l dau thi can dau con lai can duoc bao nhieu kg,biet rang cai can ko co dau can nang 1.15kg.
giai nhanh minh tich cho
bài 1 . mot hình hộp chữ nhật có dien tich xung quanh la 140 cm2 .chieu dai hon chieu rong 2 m , chieu cao la 5 m .
a . tinh chu vi mat day
b . tinh dien tich toan phan cua hinh hop chu nhat .
bai 2 . cho hinh thang ABCD co đáy AB = 30 cm va CD = 45 cm . AC va BD cat nhau tai diem O . cho biet dien tich tam giac OAB la 180 cm2 . hay tinh dien tich hinh thang .
AI BIẾT BAI NÀO LÀM BAI AY NHE .KO BAT BUOC LAM 2 BAI NHUNG GIAI BAI DAY DU .
bai toan danh cho nhung ban thong minh ne
1.Mot o to di quang duong AB het 2,4 gio voi van toc 50 km/gio.Hoi mot nguoi di xw may di het quang duong AB trong bao lau? Biet van toc cua nguoi di xe may la 40 km/gio.
2.Mot thua ruong hinh thang co day lon la 45m ,day be bang 60% day lon, chieu cao bang 80% day be.Tinh dien tich thua ruong do.
Chao ca ban, minh la Hoa lop 5a2 truong Tieu hoc Cam Son 2. Minh ko hoc gioi toan cho lam nen mong muon ca ban hay giup minh .O lop minh co giao ra rat nhieu bai tap nhung tu khi minh vao Oline Math thi ko thay kho khan khi gap cac bai tap kho .Minh muon cac ban hay noi cho ban cua minh vao Oline Math de chung ta ko con gap cac bai tap kho chung ta co the len Oline Math de hoc hoi va tham khao nhung bai toan don gian va nhung bai toan nang cao ,cac ban nhe !^_^ Hay cung tham gia Oline Math nhe ,o day co rat nhieu cuon sach hay va bo ich giup cho cac ban them hieu biet ve nhung bai minh chua hoc !Chuc cac ban mot ngay tot lanh .Thank you !
co 4 ban cung thi giai toan nhu sau. moi nguoi phai giai 4 bai toan .neu giai dung 1 bai thi duoc 2 diem ,con neu sai mot bai thi tru 2 diem . neu so diem bi tru bang hoac lon honso diem dat thi coi nhu la 0. trong cuoc thi nay chac chan it nhat co 2 ban cung diem . em giai thich dieu do ? nhanh len, minh can gap
BAN NAM DEM CAC CHU SO DUNG DE DANH SO TRANG CUA MUON CUON SACH TUY NHIEN DO CO HAI MAT GIAY DINH VAO NHAU NEN BAN NAM DEM CO 218 CHU SO HAY TINH XEM CUON SANH DO CO BAO NHIEU TRANG VA HAI MAT GIAY DINH VAO NHAU LA CAC TRANG CO MAY CHU SO
GIAI THEO TH LOP 5
:LLL
gia tien 1 quyen vo mong la 2500 dong , 1 quyen vo day la 4000 dong . co giao da mua mot so vo mong va mot so vo day het 31000 dong . co giao nham tinh rang : neu doi so vo day dung bang so vo mong va doi so vo mong dung bang so vo day da mua thi phai tra them 3000 dong nua . hoi co giao da mua bao nhieu quyen vio moi loai ?
CAC BAN GIAI THICH CHO MINH CAU : neu doi so vo day dung bang so vo mong va doi so vo mong dung bang so vo day da mua thi phai tra them 3000 dong nua . hoi co giao da mua bao nhieu quyen vio moi loai ?
MINH NHAC LAI NHA . CAC BAN GIAI THICH CHO MINH CAU NAY NHA , CHU KHONG PHAI GIAI BAI TOAN
CAU NAY CO NGHIA LA :............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Giai bai toan nay ho minh voi tim 1 so co 4 chu so biet rang neu viet cac chu so cua no theo thu tu nguoc lai thi ta duoc mot so bang 4 lan so da cho?