day nho AB=40m day lon CD= 60m duong cao AD=40m lay E tren AD , G tren BC sao cho EG  chia hinh thang ABCD lam 2 hinh thang co duong cao AE la 30m va ED la 10m 

Cho hinh thang vuong ABCD, co day nho AB la 40 m. Lay E tren AD, G tren BC sao cho EG chia hinh thang ABCD lam thanh hai hinh thang co duong cao AE la 30 m va ED la 10m. Tinh dien tich hinh thang aBGE va EGCD

cho hinh thang ABCD co day nho AB = 18cm, day lon CD = 24cm. tren duong cheo AC lay trung diem E. Noi B voi E; D voi E. Biet dien tich hinh tam giac BCE la 45cm2. Tinh dien tich hinh thang ABCD. minh dang can gap. minh cam on truoc nha.

cho hinh thang abcd. co day nho la 18cm. day lon la 24cm.diem m tren ab cach b 6cm. tu m ke duong song song voi bc. cat cach cd bang n. tinh dien tich hinh thang amnd. biet dien tich hinh thang abcd la 450cm2

cho hinh thang abcd co dien tich la 27m2 day lon cd gap 2 lan ab tren ad lay diem e sao cho ae gap 2 lan ed tinh dien tich bec

cho hing vuong ABCD ( vuong o A va D ) co canh day be la AB va canh day lon la CD.tu B ha duong cao BH vuong goc voi canh day lon CD . tinh dien tich hinh thang ABCD biet canh AB dai 32 cm , canh AD dai 0,3 m va canh HC bang 2 dm. dien tich hinh thang ABCD la...

1 thua ruong hinh thang vuong ABCD. Day be AB=20m. Day lon CD=40m. Chieu cao AD=32m. Nay mo rong duong nen bi cat mat 1 hinh thang co day lon la CD va chieu cao=8m. Tinh S phan con lai?

   ( Viet ro cach giai ra nhe! )

cho tam giac ABC co goc A vuong canh AB = 40m canh AC = 30m canh BC = 50m tren canh AC lay diem F tren canh AB lay diem E sao cho hinh thang EFCB co chieu cao la 12m tinh dien tich cua tam giac AEF va dien tich hinh thang EFCB ?

1 khu dat ht abcd co day be ab= 24 m, day lon cd= 32 m. tren ad lay 1 diem m sao cho am = md. noi m voi c. niet dien tich mdc la 224 m vuong. tinh dien tich hinh thang abcd