Các câu hỏi tương tự
khu dat trong hoa trong vuon truong truoc day la mot hinh vuong co dien tich la 32 m vuong .nay thay co mo rong thanh hinh tron co duong kinh bang duong cheo vuon truong hinh vuong tinh dien tich mo rong them
mot thua ruong hinh thang co chieu cao la 10m hieu cua 2 canh day la 22m.Nguoi ta mo rong thua ruong do thanh hinh chu nhat co chieu daibang canh day lon va chieu rong bang chieu cao .Dien tich duoc mo rong bang 1phan7 dien tich cu .phan dat mo mo rong them ve phia tay phai la 90m vuong .Tinh day lon cua thua ruong cu
1/Mot vuon hoa hinh hop chu nhat co chu vi la 128m,chieu rong bang 3phan5 chieu dai .Tinh dien tich hinh chu nhat .2/Mot manh vuon hinh chu nhat co chu vi 228m, chieu rong 40m .o giua manh vuon , nguoi ta dao 1 cai ao hinh vuong canh 10m .Tinh dien tich phan dat con lai .3/Mot thua ruong hinh thang co day lon la 69m,day be 2phan3 day lon va chieu cao bang 3 phan 4 tong do dai hai day.a/Tinh dien tich thua ruong dob/Trung binh 100m vuong thua ruong thu hoach duoc 70 kg thoc. Hoi ca thua ruong th...
Đọc tiếp
1/Mot vuon hoa hinh hop chu nhat co chu vi la 128m,chieu rong bang 3phan5 chieu dai .Tinh dien tich hinh chu nhat .
2/Mot manh vuon hinh chu nhat co chu vi 228m, chieu rong 40m .o giua manh vuon , nguoi ta dao 1 cai ao hinh vuong canh 10m .Tinh dien tich phan dat con lai .
3/Mot thua ruong hinh thang co day lon la 69m,day be 2phan3 day lon va chieu cao bang 3 phan 4 tong do dai hai day.
a/Tinh dien tich thua ruong do
b/Trung binh 100m vuong thua ruong thu hoach duoc 70 kg thoc. Hoi ca thua ruong thu hoach duoc bao nhieu ki lo gam thoc .
4/Mot hinh hop chu nhat co chieu cao bang trung binh cong cua dai va rong .Dien tich xung quanh cua hinh hop la 2500m vuong .Chieu dai hon chieu rong 20 cm .Tinh the tich hinh hop .
Mot thua ruong hinh thang vuong co day be bang chieu cao va bang mot nua day lon .Thua ruong do duoc mo rong thanh hinh chu nhat. Tinh dien tich hinh thang biet dien dien tich phan mo rong la 5dam2.
Mot hinh thang co chieu cao bang 10m hieu 2 day la 22m keo dai day nho bang day lon de hinh da cho thanh hinh chu nhat co chieu dai bang day lon chieu rong bang duong cao hinh thang dien tich duoc mo rong them 1/ 7 dien tich hinh thang cu phan mo rong them co dien tich la 90m2 tinh do dai day lon cua hinh thang ban dau
mot mieng vuon hinh thang co dien tich bang dien tich mot mieng vuon hinh tam giac co day 50 m va chieu cao 37,5 m
a) tim day lon va day be cua mieng vuon hinh thang .biet chieu cao la 25m va day be bang 2/3 day lon
b) trong mieng vuon hinh thang ,nguoi ta trong cam chiem 40 % dien tich. tinh dien tich dat trong cam
1 hinh thang co chieu cao la 10m hieu 2 day la 22m keo dai day nho = day lon de hinh da cho thanh hinh chu nhat co chieu dai = day lon chieu rong = duong cao hinh thang dien tich duoc mo rong them = 1/7 dien tich hinh thang cu 1 phan mo rong them co dien tich la 90m2
mot mieng vuon hinh thang co dien tich bang dien tich mot mieng vuon hinh tam giac co day 50 m va chieu cao 37,5 m
a) tim day lon va day be cua mieng vuon hinh thang biet chieu cao la 25 m va day be bang 2/3 day lon
b)trong mieng vuon hinh thang nguoi ta trong cam chiem 40% dien tich tinh dien tich dat trong cam
mot manh vuon hinh thang co day be bang 90m day lon bang 5/3 day be va chieu cao bang 3/4 day lon
a tinh dien tich manh vuon hinh thang
b neu tang day lon them 2,5m thi dien tich phan tang them cua manh vuon do la bao nhieu met vuong