Mot khoi go co hinh dang va kich thuoc nhu hinh ben (trong trac nhiem toan trang 28)
Biet 1dm3 go can nang 2,5kg. Hoi ca khoi go do can nang bao nhieu kg
mot khoi kim loai dang hinh hop chu nhat co cac kich thuoc nhu ben .Khoi do bi cat di mot phan co dang hinh lap phuong canh 3cm.Biet 1dm3 kim loai do can nang 7.5kg.Hoi khoi kim loai còn lại can nang bao nhieu
mot khoi go hinh hop chu nhat co chieu dai 1,2m chieu rong 2dm va chieu cao 1,5dm. biet rang 2dm3 go can nang 1,5kg. hoi khoi go can nang bao nhieu
mot khoi go lim hinh hop chu nhat co chieu dai 1,5m ,chieu rong1,2mva chieu cao 5dm .biet rang 1dm khoi go do can nang 0,85kg .hoi khoi go lim do can nang bao nhieu tan ?
mot khoi kim loai co hinh lap phuong co canh 0,5m.moi de-xi-me tkhoi kim loai do can nang 10 kg.hoi khoi kim can nang bao nhieu ki-lo-gam?
mot khoi kim loai hinh lap phuong co canh la 69 cm 1dm3 kim loai do can nang 13,5 kg hoi khoi kim loai do can nang bao nhieu kg
mot khoi go hinh hop chu nhat kich thuoc la 4cmx5cmx6cmduoc to mau do toan bo cac mat sau do duoc cat thanh hinh khoi lap phuong kich thuoc 1cmx1cmx1cm .hoi ti le khoi lap phuong co 2 mat mau do va khoi lap phuong co 3 mat mau do la bao nhieu %
Mot khoi go dang hinh lap phuong co canh 0,4m . Biet 1dm3 go can nang 0,65kg?
Cac ban nho giup minh nha va kb luon.
mot khoi be tong dang hinh hop chu nhat co chieu dai 0,8m chieu rong 0,6m chieu cao 0,5m biet 1dm khoi be tong do can nang 2,5kg hoi khoi be tong do nang bao nhieu kg