Cho hinh thang ABCD, co dien tich 510cm2, day AB la 24cm, day lon DC bang 3/2 day be. Tren AB lay diem M cach A 16cm, tu M ke duong thang song song voi BC va cat DC tai N. Tim dien tich hinh thang ANMD.
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
Bn lên mạng hoặc vào câu hỏi tương tự nhé!
mk bận rồi!
k mk nha!
thanks!
haha!
cho tam giac ABC co dien tich la 283,5 cm2 day BC dai 27 cm.diem M tren AC va cach C mot doan bang 1/3 AC,tu M ke duong song song voi day Bc cat AB tai diem N.tinh dien tich hinh thang MNBC
cho hinh thang ABCD. tren AB lay 2 diem M va N ke hai duong sao cho doan AM=ND=AD/4. Tu M va N ke 2 duong song song voi AB va CD, chung cat canh BC tai P va Q. Noi NP,QN. hay chung to rang dien tch hinh thang MPQN=1/2 dien tich hinh thang ABCD
cho hinh thang ABCD co day nho AB DAI 13 M , day lon DC dai 28 m, chieu cao AH bang 17 m.
A tinh dien tich hinh thang ABCD
B ke 2 duong cheo AC va bd , chung cat nhau tai diem O . so sang dien tich tam giac AOD va dien tich tam giac BOC
Cho hinh thang ABCD day be 12m day lon gap 3lan day be duong cheo AB va BD cat nhau tai diem O . dien tich hinh thang AOB la 27m
Co nhung tam giac nao co dien tich bang nhau
Dien tich hinh thang ABCD
Chieu cao hinh thang ABCD
mot hinh thang abcd co goc a va goc d vong ab= 36m dc=45m ad=40m tren ad diem m cach d =10m ke duong thang m song song dc cat bc tai n tinh dien tich
BAI1/Cho hinh thang ABCD co day nho AB bang 10,8 m day lon DC bang 27 m noi A va C . Tinh dien tich tam giac ABC la 54m2
bai2/ Trung binh cong cua ba so la 91 tom ba so do biet so thu nhat gap doi so thu hai va so thu hai kem so thu ba 13 don vi
bai3/ Cho hinh thang ABCD co day lon CD la 20m day be =15m M la diem tren AB cach B la 5m noi M voi C Tinh dien tich hinh thangAMCD biet dien tich hinh tam giac MBC la 28 m2
cho hinh thang abcd co day ab va cd .tren day ab lay hai diem m va n sao cho am=mn=nb=1cm.hay so sanh hinh thang mncd voi dien tich hinh thang abcd biet rang dc=5cm
cho hinh thang ABCD co day CD bang 2 lan day AB.
a, Tinh chieu cao hinh thang , biet dien tich hinh thang bang : 241,5 m2 , ab : 11,5
b, keo dai AB ve phia B mot doan BN , noi N voi C sao cho dien tich tam giac BNC bang dien tich hinh thang ABCD , so sanh BN voi AB
c, tren AC lay diem O sao cho AO = OC , noi NO cat BC tai M . So sanh dien tich tam giac ABO voi dien tich tam giac MOC.