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mot hinh thang co do dai day be kem day lon la 5 dm va kem 3 lan day lon. Chieu cao cua hinh thang do la 3,5 dm. Hoi dien tich hinh thang do la bao nhieu dm2
1 HINH THANG CO SO DO CANH DAY KEM 3 LAN CANH DAY LON LA 7,5 . CHIEU CAO CUA HINH THANG DO LA 3,5 . VAY DIEN TICH HINH THANG DO LA
mot hinh thang co dien tich la 282.1dm vuong day nho la 1.7m va kem day lon la 11.5dm mo rong day lon cua hinh thang de dien tich hinh thang tang them 37.2dm vuong hoi phai mo rong canh day lon them bao nhieu m
Mot hinh thang co dien tich la 15,17 dm vuong va chieu cao la 3,7dm. Biet day be kem day lon 2dm, tim do dai hai day
mot hinh tam giac co dien tich la 12.16 dm vuong va chieu cao tuong ung voi mot canh day la 3.8dm vay canh day cua hinh tam giac do la bao nhieu dm
mot manh bia hinh thang vuong co day be la 3,5dm va bang nua canh day lon canh ben vuong goc voi 2 day la 2,8dm vay dien tich do la bao nhieu met vuong
1 manh vuon hinh thang co dien tich la 225.75 m2 do dai canh day nho lam 125 dm va kem canh day lon 18 m neu mo rong day lon them 5.2 m thi dien tich tang them bao nhieu m2
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...
Mọt hinh thang co day lon hon day be la 5 dm va kem 3 lan day lon. chieu cao là 3.5. Tinh dien tich hinh thang