mot thua ruong hcn co chieu dai la 2/5 km chieu rong bang 5/8 chieu dai hoi dien tich cua thua rong la bao nhieu m? tren thua rong do nguoi ta trong lua va khi thu hoach duoc tat ca la 2 tan thoc hoi moi met vuong ruong thu hoach duoc bao nhieu kg thoc
mot thua ruong hcn co chieu dai la 2/5 km chieu rong bang 5/8 chieu dai hoi dien tich cua thua rong la bao nhieu m? tren thua rong do nguoi ta trong lua va khi thu hoach duoc tat ca la 2 tan thoc hoi moi met vuong ruong thu hoach duoc bao nhieu kg thoc
mot thua ruong hcn co chieu dai la 2/5 km chieu rong bang 5/8 chieu dai hoi dien tich cua thua rong la bao nhieu m2? tren thua rong do nguoi ta trong lua va khi thu hoach duoc tat ca la 2 tan thoc hoi moi met vuong ruong thu hoach duoc bao nhieu kg thoc
mot thua ruong hinh chu nhat co nua chu vi bang 120 m , chieu rong bang 5/7 chieu dai .
a, tinh dien tich thua ruong do .
b,tren thua ruong do cu 1m vuong thu hoach duoc 5/7 kg thoc .tinh so ta thoc thu duoc tren thua ruong do .
chu vi thua ruong hinh chu nhat la 110 m neu tang chieu dai 4m giam chieu rong 7 m thi chieu rong bang 1/3 chieu dai nguoi ta trong lua cu 1/2 dien tich thu hoach duoc 3 kg thoc hoi ca thua ruong
mot thua ruong hinh chu nhat co chieu dai la 72m va chieu rong bang 2/3 chieu dai biet rang cu 1m vuong ruong do thi thu hoach duoc 3/4 kg thoc hoi so thoc thu hoach duoctren thua ruong
mot thua ruong hinh chu nhat co chieu dai 120mchieu rong 2/3chieu dai nguoi ta cat cay lua o do thu hoach duoc 3/2 kg thoc hoi thua ruong do thu hoach duoc boa nhieu ta thoc
mot thua ruong hinh chu nhat co chieu dai gap 3lan chieu rong va lon hon chieu rong 40m .
a, tinh dien tich thua ruong do la.
b. nguoi ta trong lua tren thua ruong do ,cu 1m2 thu duoc 3kg thoc . hoi thua ruong do thu hoach duoc bao nhieu ta thoc
MOT THUA RUONG HINH CHU NHAT CO CHIEU DAI 120 M, CHIEU RONG BANG 1/2 CHIEU DAI. NGUOI TA CAY LUA O DO, TINH RA CU 100M VUONG THU HOACH DUOC 50 KG THOC . HOI DA THU HOACH DUOC O THUA RUONG DO BAO NHIU TA THOC?