3,6=18/5
Nua chu vi hinh chu nhat se bang:18/5:2=9/5(chieu dai)
Coi:
Chu vi la:18 phan;nua chu vi la:9 phan thi chieu dai la 5 phan
Vay chieu rong la:9-5=4(phan)
Vay chu vi se bang so lan chieu rong la:
18:4=4,5(lan)
Chuc bn hoc tot!
Dung thi nho k cho minh de ung ho minh nha!!!
mot thua ruong hinh chu nhat co chieu dai 51,6m. chieu rong bang 2/3 chieu dai. nguoi ta thu hoach moi lan la 58kg thoc. hoi thua ruong do thu hoach dc bao nhieu kg thoc ?
1 hinh chu nhat neu bot chieu dai 3m chieu rong 2 m thi hinh chu nhat co chu vi gap 10 lan chieu rong cu tinh chu vi ban dau
Motmanh dat hinh chu nhat co chu vi 120m , chieu rong bang 1/3 chieu dai . Nguoi ta trong lua dat nang suat 0,5kg/m vuong . hoi nguoi do thu duoc bao nhieu ta lua
mot khu dat hinh chu nhat co chieu dai la 3/4km chieu rong la 5/8km
a, tinh nua chu vi cua khu dat (bang kilomet)
b, chieu dai hon chieu rong bao nhieu km ?
mot thua vuon hinh chu nhat co chieu dai 4/5 km , chie rong la 7/10 km.
a) tinh chu vi thua vuon (bang ki-lo-met)
b)chieu dai hon chieu rong bao nhieu ki-lo-met ?
mot hinh chu nhat co chu vi la 48 m,chieu dai gap doi chieu rong .tim chieu dai chieu rong va dt hinh chu nhat do
mot manh dat hinh chu nhat co chieu dai 120 chieu dai gap 6 lan chieu rong.
a)tinh chu vi va dien tich
b)mot hinh vong co chu vi bang hinh chu nhat.tinh dien tich hinh vuong
mot hinh chu nhat co chieu rong 18,35 , chieu dai hon chieu rong 9,3 m . Tinh chu vi hinh chu nhat
mot hinh chu nhat co chieu dai gap 2 lan chieu rong va dien tich bang 450 m2
tinh chu vi hinh chu nhat do
